diff --git a/src/ctask/ctask.route.ts b/src/ctask/ctask.route.ts
index 08a6992..117d9fd 100644
--- a/src/ctask/ctask.route.ts
+++ b/src/ctask/ctask.route.ts
@@ -115,7 +115,7 @@ export async function ctaskRoutes(fastify: FastifyInstance) {
       const { field } = req.params as { field: string };
 
       try {
-        const uniqueValues = await getUniqueFields(field, "task", req.user);
+        const uniqueValues = await getUniqueFields(field, "ctasks", req.user);
         return res.code(200).send(uniqueValues);
       } catch (err) {
         return err;
diff --git a/src/ctask/ctask.schema.ts b/src/ctask/ctask.schema.ts
index 226044c..a217683 100644
--- a/src/ctask/ctask.schema.ts
+++ b/src/ctask/ctask.schema.ts
@@ -28,6 +28,7 @@ const taskSchema = new mongoose.Schema({
     type: mongoose.Types.ObjectId,
     ref: "user",
   },
+  taggedUsers: Array,
 });
 
 export const taskFields = Object.keys(taskSchema.paths).filter(
diff --git a/src/ctask/ctask.service.ts b/src/ctask/ctask.service.ts
index 0242156..c7ee7df 100644
--- a/src/ctask/ctask.service.ts
+++ b/src/ctask/ctask.service.ts
@@ -37,6 +37,7 @@ export async function createTask(
         content: input.note,
       },
       task.pid,
+      "ctasks",
       user
     );
   }
@@ -80,6 +81,25 @@ export async function listTasks(
   const sortObj = getSortObject(params, taskFields);
   const filterObj = getFilterObject(params) || [];
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const taskList = await taskModel.aggregate([
     {
       $match: {
@@ -90,6 +110,7 @@ export async function listTasks(
         ],
       },
     },
+    ...taggedFilter,
     {
       $lookup: {
         from: "users",
diff --git a/src/note/note.controller.ts b/src/note/note.controller.ts
index 3ba778f..49ff3c5 100644
--- a/src/note/note.controller.ts
+++ b/src/note/note.controller.ts
@@ -8,9 +8,10 @@ export async function createNoteHandler(
 ) {
   const { resourceId } = req.params as { resourceId: string };
   const input = req.body as CreateNoteInput;
+  const resourceType = req.originalUrl.split("/")[3];
 
   try {
-    const note = await createNote(input, resourceId, req.user);
+    const note = await createNote(input, resourceId, resourceType, req.user);
     return res.code(201).send(note);
   } catch (err) {
     return err;
diff --git a/src/note/note.service.ts b/src/note/note.service.ts
index 1590228..a77a613 100644
--- a/src/note/note.service.ts
+++ b/src/note/note.service.ts
@@ -1,12 +1,24 @@
+import { createAlert } from "../alert/alert.service";
 import { AuthenticatedUser } from "../auth";
 import { generateId } from "../utils/id";
+import { extractExpressions, modelMap } from "../utils/tags";
 import { CreateNoteInput, noteModel } from "./note.schema";
 
 export async function createNote(
   input: CreateNoteInput,
   resourceId: string,
+  resourceType: string,
   user: AuthenticatedUser
 ) {
+  const userIds = extractExpressions(input.content);
+
+  const taggedUsers = userIds.map((item) => {
+    return {
+      userId: item,
+      taggedAt: new Date(),
+    };
+  });
+
   const newNote = await noteModel.create({
     tenantId: user.tenantId,
     pid: generateId(),
@@ -16,6 +28,56 @@ export async function createNote(
     createdBy: user.userId,
   });
 
+  if (
+    userIds.length > 0 &&
+    [
+      "permits",
+      "processed",
+      "rts",
+      "tasks",
+      "ctasks",
+      "payments",
+      "notifications",
+    ].includes(resourceType)
+  ) {
+    const model = modelMap[resourceType];
+    const obj = await model.findOne({ pid: resourceId });
+
+    console.log(obj.taggedUsers);
+
+    if (!obj.taggedUsers) {
+      await model.updateOne(
+        { pid: resourceId },
+        { $set: { taggedUsers: taggedUsers } }
+      );
+    } else {
+      for (const user of taggedUsers) {
+        const userIndex = obj.taggedUsers.findIndex(
+          (item) => item.userId == user.userId
+        );
+        console.log(userIndex);
+        if (userIndex != -1) obj.taggedUsers[userIndex].taggedAt = new Date();
+        else obj.taggedUsers.push(user);
+      }
+
+      obj.markModified("taggedUsers");
+      await obj.save();
+    }
+
+    for (const id of userIds) {
+      if (id == user.userId) continue;
+
+      await createAlert(
+        user.tenantId,
+        "You are tagged in a note",
+        "user",
+        id,
+        resourceId,
+        resourceType
+      );
+    }
+  }
+
   return newNote.populate({ path: "createdBy", select: "pid name avatar" });
 }
 
diff --git a/src/notification/notification.schema.ts b/src/notification/notification.schema.ts
index cf43a06..3bb393c 100644
--- a/src/notification/notification.schema.ts
+++ b/src/notification/notification.schema.ts
@@ -25,6 +25,7 @@ const notificationSchema = new mongoose.Schema({
     type: mongoose.Types.ObjectId,
     ref: "user",
   },
+  taggedUsers: Array,
 });
 
 export const notificationFields = Object.keys(notificationSchema.paths).filter(
diff --git a/src/notification/notification.service.ts b/src/notification/notification.service.ts
index dcb5b82..309ffe9 100644
--- a/src/notification/notification.service.ts
+++ b/src/notification/notification.service.ts
@@ -77,6 +77,7 @@ export async function updateNotification(
             content: msg,
           },
           notifId,
+          "notifications",
           user
         );
 
@@ -84,6 +85,7 @@ export async function updateNotification(
           await createNote(
             { content: msg },
             updateNotificationResult.permitId,
+            "notifications",
             user
           );
 
@@ -123,6 +125,25 @@ export async function listNotifications(
     filterObj.push({ client: new mongoose.Types.ObjectId(user.orgId) });
   }
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const pipeline: any = [
     {
       $match: { $and: [{ tenantId: user.tenantId }, ...filterObj] },
@@ -140,6 +161,7 @@ export async function listNotifications(
 
   pipeline.push(
     ...[
+      ...taggedFilter,
       {
         $lookup: {
           from: "users",
diff --git a/src/payments/payment.route.ts b/src/payments/payment.route.ts
index d1d639a..ca77e26 100644
--- a/src/payments/payment.route.ts
+++ b/src/payments/payment.route.ts
@@ -62,7 +62,7 @@ export async function paymentRoutes(fastify: FastifyInstance) {
       const { field } = req.params as { field: string };
 
       try {
-        const uniqueValues = await getUniqueFields(field, "payment", req.user);
+        const uniqueValues = await getUniqueFields(field, "payments", req.user);
         return res.code(200).send(uniqueValues);
       } catch (err) {
         return err;
diff --git a/src/permit/permit.schema.ts b/src/permit/permit.schema.ts
index 32ae7fa..959ff11 100644
--- a/src/permit/permit.schema.ts
+++ b/src/permit/permit.schema.ts
@@ -1,7 +1,7 @@
-import { z } from 'zod';
-import mongoose from 'mongoose';
-import { buildJsonSchemas } from 'fastify-zod';
-import { pageMetadata, pageQueryParams } from '../pagination';
+import { z } from "zod";
+import mongoose from "mongoose";
+import { buildJsonSchemas } from "fastify-zod";
+import { pageMetadata, pageQueryParams } from "../pagination";
 
 const permitSchema = new mongoose.Schema({
   tenantId: {
@@ -16,7 +16,7 @@ const permitSchema = new mongoose.Schema({
   county: Object,
   client: {
     type: mongoose.Types.ObjectId,
-    ref: 'organization',
+    ref: "organization",
   },
   clientData: Object,
   permitDate: Date,
@@ -34,7 +34,7 @@ const permitSchema = new mongoose.Schema({
   utility: String,
   assignedTo: {
     type: mongoose.Types.ObjectId,
-    ref: 'user',
+    ref: "user",
   },
   link: String,
   address: Object,
@@ -52,7 +52,7 @@ const permitSchema = new mongoose.Schema({
   createdAt: Date,
   createdBy: {
     type: mongoose.Types.ObjectId,
-    ref: 'user',
+    ref: "user",
   },
   newProcessingStatus: Array,
   newPayment: Array,
@@ -71,12 +71,13 @@ const permitSchema = new mongoose.Schema({
   jobNumber: String,
   startDate: Date,
   history: Array,
+  taggedUsers: Array,
 }).index({ tenantId: 1, permitNumber: 1 }, { unique: true });
 
 export const permitFields = Object.keys(permitSchema.paths).filter(
-  (path) => path !== '__v'
+  (path) => path !== "__v"
 );
-export const permitModel = mongoose.model('permit', permitSchema);
+export const permitModel = mongoose.model("permit", permitSchema);
 
 const permitCore = {
   permitNumber: z.string(),
@@ -161,5 +162,5 @@ export const { schemas: permitSchemas, $ref: $permit } = buildJsonSchemas(
     updatePermitInput,
     pageQueryParams,
   },
-  { $id: 'permit' }
+  { $id: "permit" }
 );
diff --git a/src/permit/permit.service.ts b/src/permit/permit.service.ts
index facfa11..845eb29 100644
--- a/src/permit/permit.service.ts
+++ b/src/permit/permit.service.ts
@@ -72,10 +72,30 @@ export async function listPermits(
     filterObj.push({ client: new mongoose.Types.ObjectId(user.orgId) });
   }
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const permitsList = await permitModel.aggregate([
     {
       $match: { $and: [{ tenantId: user.tenantId }, ...filterObj] },
     },
+    ...taggedFilter,
     {
       $lookup: {
         from: "users",
@@ -206,6 +226,7 @@ export async function updatePermit(
             content: msg,
           },
           permitId,
+          "permits",
           user
         );
 
diff --git a/src/processed/processed.schema.ts b/src/processed/processed.schema.ts
index e2ff1e7..69e44a5 100644
--- a/src/processed/processed.schema.ts
+++ b/src/processed/processed.schema.ts
@@ -1,7 +1,7 @@
-import z from 'zod';
-import mongoose from 'mongoose';
-import { pageQueryParams } from '../pagination';
-import { buildJsonSchemas } from 'fastify-zod';
+import z from "zod";
+import mongoose from "mongoose";
+import { pageQueryParams } from "../pagination";
+import { buildJsonSchemas } from "fastify-zod";
 
 const processedSchema = new mongoose.Schema({
   tenantId: {
@@ -16,7 +16,7 @@ const processedSchema = new mongoose.Schema({
   county: Object,
   client: {
     type: mongoose.Types.ObjectId,
-    ref: 'organization',
+    ref: "organization",
   },
   clientData: Object,
   permitDate: Date,
@@ -34,7 +34,7 @@ const processedSchema = new mongoose.Schema({
   utility: String,
   assignedTo: {
     type: mongoose.Types.ObjectId,
-    ref: 'user',
+    ref: "user",
   },
   link: String,
   address: Object,
@@ -52,7 +52,7 @@ const processedSchema = new mongoose.Schema({
   createdAt: Date,
   createdBy: {
     type: mongoose.Types.ObjectId,
-    ref: 'user',
+    ref: "user",
   },
   newProcessingStatus: Array,
   newPayment: Array,
@@ -71,16 +71,17 @@ const processedSchema = new mongoose.Schema({
   jobNumber: String,
   transferDate: Date,
   history: Array,
+  taggedUsers: Array,
 }).index({ tenantId: 1, permitNumber: 1 }, { unique: true });
 
 export const processedFields = Object.keys(processedSchema.paths).filter(
-  (path) => path !== '__v'
+  (path) => path !== "__v"
 );
 
 export const processedModel = mongoose.model(
-  'processed',
+  "processed",
   processedSchema,
-  'processed'
+  "processed"
 );
 
 const updateProcessedInput = z.object({
@@ -100,5 +101,5 @@ export const { schemas: processedSchemas, $ref: $processed } = buildJsonSchemas(
     pageQueryParams,
     updateProcessedInput,
   },
-  { $id: 'processed' }
+  { $id: "processed" }
 );
diff --git a/src/processed/processed.service.ts b/src/processed/processed.service.ts
index 7147d75..2f609d2 100644
--- a/src/processed/processed.service.ts
+++ b/src/processed/processed.service.ts
@@ -48,6 +48,7 @@ export async function updateProcessed(
             content: msg,
           },
           permitId,
+          "processed",
           user
         );
       }
@@ -70,6 +71,25 @@ export async function listProcessedPermits(
     filterObj.push({ client: new mongoose.Types.ObjectId(user.orgId) });
   }
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const pipeline: any = [
     {
       $match: { $and: [{ tenantId: user.tenantId }, ...filterObj] },
@@ -91,6 +111,7 @@ export async function listProcessedPermits(
 
   pipeline.push(
     ...[
+      ...taggedFilter,
       {
         $lookup: {
           from: "users",
diff --git a/src/rts/rts.schema.ts b/src/rts/rts.schema.ts
index 9162946..4bc3f37 100644
--- a/src/rts/rts.schema.ts
+++ b/src/rts/rts.schema.ts
@@ -53,6 +53,7 @@ const rtsSchema = new mongoose.Schema({
     type: mongoose.Types.ObjectId,
     ref: "user",
   },
+  taggedUsers: Array,
 });
 
 export const rtsFields = Object.keys(rtsSchema.paths).filter(
diff --git a/src/rts/rts.service.ts b/src/rts/rts.service.ts
index 08e12c0..93f8c51 100644
--- a/src/rts/rts.service.ts
+++ b/src/rts/rts.service.ts
@@ -34,7 +34,7 @@ export async function createRts(
     ...input,
     tenantId: user.tenantId,
     pid: generateId(),
-    client: defaultClient,
+    client: user.role == "client" ? defaultClient : input.client,
     createdAt: new Date(),
     createdBy: user.userId ?? null,
   });
@@ -78,10 +78,30 @@ export async function listRts(
     filterObj.push({ client: new mongoose.Types.ObjectId(user.orgId) });
   }
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const rtsList = await rtsModel.aggregate([
     {
       $match: { $and: [{ tenantId: user.tenantId }, ...filterObj] },
     },
+    ...taggedFilter,
     {
       $lookup: {
         from: "organizations",
diff --git a/src/task/task.controller.ts b/src/task/task.controller.ts
index 34084e3..9406f07 100644
--- a/src/task/task.controller.ts
+++ b/src/task/task.controller.ts
@@ -47,7 +47,7 @@ export async function listTaskHandler(req: FastifyRequest, res: FastifyReply) {
   const queryParams = req.query as PageQueryParams;
 
   try {
-    const taskList = await listTasks(queryParams, req.user.tenantId);
+    const taskList = await listTasks(queryParams, req.user);
     return res.code(200).send(taskList);
   } catch (err) {
     return err;
diff --git a/src/task/task.route.ts b/src/task/task.route.ts
index d6a17de..0282659 100644
--- a/src/task/task.route.ts
+++ b/src/task/task.route.ts
@@ -128,7 +128,7 @@ export async function taskRoutes(fastify: FastifyInstance) {
       const { field } = req.params as { field: string };
 
       try {
-        const uniqueValues = await getUniqueFields(field, "task", req.user);
+        const uniqueValues = await getUniqueFields(field, "tasks", req.user);
         return res.code(200).send(uniqueValues);
       } catch (err) {
         return err;
diff --git a/src/task/task.schema.ts b/src/task/task.schema.ts
index 28b2cba..b492f1b 100644
--- a/src/task/task.schema.ts
+++ b/src/task/task.schema.ts
@@ -40,6 +40,7 @@ const taskSchema = new mongoose.Schema({
     type: mongoose.Types.ObjectId,
     ref: "user",
   },
+  taggedUsers: Array,
 });
 
 export const taskFields = Object.keys(taskSchema.paths).filter(
diff --git a/src/task/task.service.ts b/src/task/task.service.ts
index 56b099f..e657682 100644
--- a/src/task/task.service.ts
+++ b/src/task/task.service.ts
@@ -37,6 +37,7 @@ export async function createTask(
         content: input.note,
       },
       task.pid,
+      "tasks",
       user
     );
   }
@@ -80,16 +81,39 @@ export async function getTask(taskId: string, tenantId: string) {
     .populate({ path: "assignedTo", select: "pid name avatar" });
 }
 
-export async function listTasks(params: PageQueryParams, tenantId: string) {
+export async function listTasks(
+  params: PageQueryParams,
+  user: AuthenticatedUser
+) {
   const page = params.page || 1;
   const pageSize = params.pageSize || 10;
   const sortObj = getSortObject(params, taskFields);
   const filterObj = getFilterObject(params) || [];
 
+  let taggedFilter = [];
+  if (sortObj.taggedUsers) {
+    taggedFilter = [
+      {
+        $addFields: {
+          taggedUsers: {
+            $filter: {
+              input: "$taggedUsers",
+              as: "user",
+              cond: { $eq: ["$$user.userId", user.userId] },
+            },
+          },
+        },
+      },
+      { $match: { "taggedUsers.0": { $exists: true } } },
+      { $sort: { "taggedUsers.taggedAt": sortObj.taggedUsers } },
+    ];
+  }
+
   const taskList = await taskModel.aggregate([
     {
-      $match: { $and: [{ tenantId: tenantId }, ...filterObj] },
+      $match: { $and: [{ tenantId: user.tenantId }, ...filterObj] },
     },
+    ...taggedFilter,
     {
       $lookup: {
         from: "users",
diff --git a/src/unique.ts b/src/unique.ts
index b6f139c..67525e0 100644
--- a/src/unique.ts
+++ b/src/unique.ts
@@ -1,33 +1,18 @@
 import { orgModel } from "./organization/organization.schema";
 import { userModel } from "./user/user.schema";
-import { permitModel } from "./permit/permit.schema";
-import { processedModel } from "./processed/processed.schema";
-import { notificationModel } from "./notification/notification.schema";
-import { rtsModel } from "./rts/rts.schema";
-import { taskModel } from "./task/task.schema";
 import { AuthenticatedUser } from "./auth";
-import { paymentModel } from "./payments/payment.schema";
+import { modelMap } from "./utils/tags";
 
 type Collection =
   | "users"
   | "permits"
-  | "organizations"
+  | "orgs"
   | "processed"
   | "notifications"
   | "rts"
-  | "task"
-  | "payment";
-
-const modelMap = {
-  users: userModel,
-  permits: permitModel,
-  organizations: orgModel,
-  processed: processedModel,
-  notifications: notificationModel,
-  rts: rtsModel,
-  task: taskModel,
-  payment: paymentModel,
-};
+  | "tasks"
+  | "ctasks"
+  | "payments";
 
 export async function getUniqueFields(
   field: string,
diff --git a/src/utils/tags.ts b/src/utils/tags.ts
new file mode 100644
index 0000000..543c144
--- /dev/null
+++ b/src/utils/tags.ts
@@ -0,0 +1,28 @@
+import mongoose from "mongoose";
+import { userModel } from "../user/user.schema";
+import { permitModel } from "../permit/permit.schema";
+import { orgModel } from "../organization/organization.schema";
+import { processedModel } from "../processed/processed.schema";
+import { notificationModel } from "../notification/notification.schema";
+import { rtsModel } from "../rts/rts.schema";
+import { taskModel } from "../task/task.schema";
+import { taskModel as ctaskModel } from "../ctask/ctask.schema";
+import { paymentModel } from "../payments/payment.schema";
+
+export function extractExpressions(input: string) {
+  return [...input.matchAll(/{{(.*?)}}/g)]
+    .map((match) => match[1].trim())
+    .filter((item) => mongoose.Types.ObjectId.isValid(item));
+}
+
+export const modelMap = {
+  users: userModel,
+  permits: permitModel,
+  orgs: orgModel,
+  processed: processedModel,
+  notifications: notificationModel,
+  rts: rtsModel,
+  ctasks: ctaskModel,
+  tasks: taskModel,
+  payments: paymentModel,
+};