diff --git a/Cargo.lock b/Cargo.lock
index d5e9b9a..48b2d81 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1069,7 +1069,7 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm"
-version = "0.5.0"
+version = "0.5.3"
 dependencies = [
  "ironcalc_base",
  "serde",
diff --git a/base/src/new_empty.rs b/base/src/new_empty.rs
index a07b30e..cc07448 100644
--- a/base/src/new_empty.rs
+++ b/base/src/new_empty.rs
@@ -405,6 +405,7 @@ impl Model {
             },
             tables: HashMap::new(),
             views,
+            users: Vec::new(),
         };
         let parsed_formulas = Vec::new();
         let worksheets = &workbook.worksheets;
diff --git a/base/src/types.rs b/base/src/types.rs
index 3b516af..54b277c 100644
--- a/base/src/types.rs
+++ b/base/src/types.rs
@@ -39,6 +39,14 @@ pub struct WorkbookView {
     pub window_height: i64,
 }
 
+#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
+pub struct WebUser {
+    pub id: String,
+    pub sheet: u32,
+    pub row: i32,
+    pub column: i32,
+}
+
 /// An internal representation of an IronCalc Workbook
 #[derive(Encode, Decode, Debug, PartialEq, Clone)]
 pub struct Workbook {
@@ -51,6 +59,7 @@ pub struct Workbook {
     pub metadata: Metadata,
     pub tables: HashMap<String, Table>,
     pub views: HashMap<u32, WorkbookView>,
+    pub users: Vec<WebUser>
 }
 
 /// A defined name. The `sheet_id` is the sheet index in case the name is local
diff --git a/base/src/user_model/common.rs b/base/src/user_model/common.rs
index 0b4b172..da03010 100644
--- a/base/src/user_model/common.rs
+++ b/base/src/user_model/common.rs
@@ -14,7 +14,7 @@ use crate::{
     model::Model,
     types::{
         Alignment, BorderItem, CellType, Col, HorizontalAlignment, SheetProperties, SheetState,
-        Style, VerticalAlignment,
+        Style, VerticalAlignment, WebUser,
     },
     utils::is_valid_hex_color,
 };
@@ -293,6 +293,11 @@ impl UserModel {
         self.model.workbook.name = name.to_string();
     }
 
+    /// Set users
+    pub fn set_users(&mut self, users: &[WebUser]) {
+        self.model.workbook.users = users.to_vec();
+    }
+
     /// Undoes last change if any, places the change in the redo list and evaluates the model if needed
     ///
     /// See also:
diff --git a/bindings/wasm/Cargo.toml b/bindings/wasm/Cargo.toml
index 2315210..1c5a6a4 100644
--- a/bindings/wasm/Cargo.toml
+++ b/bindings/wasm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm"
-version = "0.5.0"
+version = "0.5.3"
 authors = ["Nicolas Hatcher <nicolas@theuniverse.today>"]
 description = "IronCalc Web bindings"
 license = "MIT/Apache-2.0"
diff --git a/bindings/wasm/fix_types.py b/bindings/wasm/fix_types.py
index fd466ee..8034cc9 100644
--- a/bindings/wasm/fix_types.py
+++ b/bindings/wasm/fix_types.py
@@ -201,6 +201,36 @@ defined_name_list_types = r"""
   getDefinedNameList(): DefinedName[];
 """
 
+set_users = r"""
+/**
+* @param {any} users
+*/
+  setUsers(users: any): void;
+"""
+
+set_users_types = r"""
+/**
+* @param {WebUser[]} users
+*/
+  setUsers(users: WebUser[]): void;
+"""
+
+get_users = r"""
+/**
+* @returns {any}
+*/
+  getUsers(): any;
+}
+"""
+
+get_users_types = r"""
+/**
+* @returns {WebUser[]}
+*/
+  getUsers(): WebUser[];
+}
+"""
+
 def fix_types(text):
     text = text.replace(get_tokens_str, get_tokens_str_types)
     text = text.replace(update_style_str, update_style_str_types)
@@ -215,6 +245,8 @@ def fix_types(text):
     text = text.replace(clipboard, clipboard_types)
     text = text.replace(paste_from_clipboard, paste_from_clipboard_types)
     text = text.replace(defined_name_list, defined_name_list_types)
+    text = text.replace(set_users, set_users_types)
+    text = text.replace(get_users, get_users_types)
     with open("types.ts") as f:
         types_str = f.read()
         header_types = "{}\n\n{}".format(header, types_str)
diff --git a/bindings/wasm/src/lib.rs b/bindings/wasm/src/lib.rs
index 5767a2e..3824a86 100644
--- a/bindings/wasm/src/lib.rs
+++ b/bindings/wasm/src/lib.rs
@@ -6,7 +6,7 @@ use wasm_bindgen::{
 
 use ironcalc_base::{
     expressions::{lexer::util::get_tokens as tokenizer, types::Area, utils::number_to_column},
-    types::{CellType, Style},
+    types::{CellType, Style, WebUser},
     BorderArea, ClipboardData, UserModel as BaseModel,
 };
 
@@ -672,4 +672,18 @@ impl Model {
             .delete_defined_name(name, scope)
             .map_err(|e| to_js_error(e.to_string()))
     }
+
+    #[wasm_bindgen(js_name = "setUsers")]
+    pub fn set_users(&mut self, users: JsValue) -> Result<(), JsError> {
+        let users: Vec<WebUser> =
+            serde_wasm_bindgen::from_value(users).map_err(|e| to_js_error(e.to_string()))?;
+        self.model.set_users(&users);
+        Ok(())
+    }
+
+    #[wasm_bindgen(js_name = "getUsers")]
+    pub fn get_users(&self) -> Result<JsValue, JsError> {
+        let users = self.model.get_model().workbook.users.clone();
+        serde_wasm_bindgen::to_value(&users).map_err(|e| to_js_error(e.to_string()))
+    }
 }
diff --git a/bindings/wasm/types.ts b/bindings/wasm/types.ts
index 7af55b8..e4b8276 100644
--- a/bindings/wasm/types.ts
+++ b/bindings/wasm/types.ts
@@ -233,4 +233,11 @@ export interface DefinedName {
   name: string;
   scope?: number;
   formula: string;
+}
+
+export interface WebUser {
+  id: string;
+  sheet: number;
+  row: number;
+  column: number;
 }
\ No newline at end of file
diff --git a/webapp/IronCalc/package-lock.json b/webapp/IronCalc/package-lock.json
index 3f94081..068ac2b 100644
--- a/webapp/IronCalc/package-lock.json
+++ b/webapp/IronCalc/package-lock.json
@@ -1,16 +1,16 @@
 {
   "name": "@ironcalc/workbook",
-  "version": "0.5.1",
+  "version": "0.5.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@ironcalc/workbook",
-      "version": "0.5.1",
+      "version": "0.5.4",
       "dependencies": {
         "@emotion/react": "^11.14.0",
         "@emotion/styled": "^11.14.0",
-        "@ironcalc/wasm": "0.5.0",
+        "@ironcalc/wasm": "0.5.3",
         "@mui/material": "^6.4",
         "@mui/system": "^6.4",
         "i18next": "^23.11.1",
@@ -43,11 +43,6 @@
         "react-dom": "^18.0.0 || ^19.0.0"
       }
     },
-    "../../bindings/wasm/pkg": {
-      "name": "@ironcalc/wasm",
-      "version": "0.5.0",
-      "license": "MIT/Apache-2.0"
-    },
     "node_modules/@adobe/css-tools": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/@adobe/css-tools/-/css-tools-4.4.2.tgz",
@@ -1060,8 +1055,10 @@
       }
     },
     "node_modules/@ironcalc/wasm": {
-      "resolved": "../../bindings/wasm/pkg",
-      "link": true
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/@ironcalc/wasm/-/wasm-0.5.3.tgz",
+      "integrity": "sha512-ryQKR5ISkSQnnsxBYDnrAUN+GDiAQUx0MzkVpJr7VQXiymOSMZbHfpv5geum1eSJV4gw1ft69syuNolIhVZ4Hg==",
+      "license": "MIT/Apache-2.0"
     },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
diff --git a/webapp/IronCalc/package.json b/webapp/IronCalc/package.json
index 228d428..584dc6c 100644
--- a/webapp/IronCalc/package.json
+++ b/webapp/IronCalc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ironcalc/workbook",
-  "version": "0.5.1",
+  "version": "0.5.4",
   "type": "module",
   "main": "./dist/ironcalc.js",
   "module": "./dist/ironcalc.js",
@@ -17,7 +17,7 @@
   "dependencies": {
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
-    "@ironcalc/wasm": "0.5.0",
+    "@ironcalc/wasm": "0.5.3",
     "@mui/material": "^6.4",
     "@mui/system": "^6.4",
     "i18next": "^23.11.1",
diff --git a/webapp/IronCalc/src/IronCalc.tsx b/webapp/IronCalc/src/IronCalc.tsx
index 38d4bad..7efae09 100644
--- a/webapp/IronCalc/src/IronCalc.tsx
+++ b/webapp/IronCalc/src/IronCalc.tsx
@@ -11,6 +11,10 @@ interface IronCalcProperties {
 }
 
 function IronCalc(properties: IronCalcProperties) {
+  properties.model.setUsers([
+    { id: "john@doe.com", sheet: 0, row: 5, column: 6 },
+    { id: "micheal@doe.com", sheet: 0, row: 1, column: 6 },
+  ]);
   return (
     <ThemeProvider theme={theme}>
       <Workbook model={properties.model} workbookState={new WorkbookState()} />
diff --git a/webapp/IronCalc/src/components/WorksheetCanvas/worksheetCanvas.ts b/webapp/IronCalc/src/components/WorksheetCanvas/worksheetCanvas.ts
index 5a4ea4b..f700c2d 100644
--- a/webapp/IronCalc/src/components/WorksheetCanvas/worksheetCanvas.ts
+++ b/webapp/IronCalc/src/components/WorksheetCanvas/worksheetCanvas.ts
@@ -19,6 +19,13 @@ import {
   outlineColor,
 } from "./constants";
 
+export interface UserSelection {
+  userId: string;
+  color: string;
+  selection: [number, number, number, number, number]; // [sheet, rowStart, columnStart, rowEnd, columnEnd]
+  div: HTMLDivElement;
+}
+
 export interface CanvasSettings {
   model: Model;
   width: number;
@@ -1244,6 +1251,34 @@ export default class WorksheetCanvas {
     editor.style.height = `${height - 1}px`;
   }
 
+  private drawUsersSelection(): void {
+    const users = this.model.getUsers();
+    for (const handle of document.querySelectorAll(
+      ".user-selection-ironcalc",
+    ))
+      handle.remove();
+      const colors = [];
+    users.forEach((user, index) => {
+      const { sheet, row, column } = user;
+      if (sheet !== this.model.getSelectedSheet()) {
+        return;
+      }
+      const [x, y] = this.getCoordinatesByCell(row, column);
+      const width = this.getColumnWidth(sheet, column);
+      const height = this.getRowHeight(sheet, row);
+      const div = document.createElement("div");
+      const color = getColor(index + 1);
+      div.className = "user-selection-ironcalc";
+      div.style.left = `${x}px`;
+      div.style.top = `${y}px`;
+      div.style.width = `${width}px`;
+      div.style.height = `${height}px`;
+      div.style.border = `1px solid ${color}`;
+      div.style.position = "absolute";
+      this.canvas.parentElement?.appendChild(div);
+    });
+  }
+
   private drawCellOutline(): void {
     const { cellOutline, areaOutline, cellOutlineHandle } = this;
     if (this.workbookState.getEditingCell()) {
@@ -1595,6 +1630,7 @@ export default class WorksheetCanvas {
     context.stroke();
 
     this.drawCellOutline();
+    this.drawUsersSelection();
     this.drawCellEditor();
     this.drawExtendToArea();
     this.drawActiveRanges(topLeftCell, bottomRightCell);
diff --git a/xlsx/src/import/mod.rs b/xlsx/src/import/mod.rs
index 7ca509e..322ecbe 100644
--- a/xlsx/src/import/mod.rs
+++ b/xlsx/src/import/mod.rs
@@ -110,6 +110,7 @@ fn load_xlsx_from_reader<R: Read + std::io::Seek>(
         metadata,
         tables,
         views,
+        users: Vec::new(),
     })
 }