diff --git a/src/canvas/canvas.controller.ts b/src/canvas/canvas.controller.ts
index ea5fc7a..56ba7b9 100644
--- a/src/canvas/canvas.controller.ts
+++ b/src/canvas/canvas.controller.ts
@@ -12,7 +12,7 @@ import {
 } from '@nestjs/common';
 import { CanvasService } from './canvas.service';
 import {
-  CanvasAccessByTagDTO,
+  GiveCanvasAccessByTagDTO,
   CanvasAccessDTO,
   CanvasContentUpdateDto,
   CanvasCreateDTO,
@@ -20,6 +20,7 @@ import {
   CanvasMetadataUpdateDTO,
   CanvasModifyTagDTO,
   CanvasStateFilter,
+  CancelCanvasAccessByTagDTO,
 } from './canvas.interface';
 import { Uuid } from '../common/common.interface';
 import { ListFilter, PagedResult } from '../common/pageable.utils';
@@ -251,7 +252,7 @@ export class CanvasController {
   /**
    * Gives access to a single canvas for a single user
    * @param canvasId
-   * @param dto - an object containing 'userId'
+   * @param dto - an object containing 'personId'
    */
   @Post('/:id/access')
   @UseGuards(AuthenticatedGuard, CanvasGuard)
@@ -259,29 +260,38 @@ export class CanvasController {
     @Param('id') canvasId: Uuid,
     @Body() dto: CanvasAccessDTO,
   ) {
-    const userId = dto.userId;
-    await this.canvasService.giveAccess({ canvasId, userId });
+    await this.canvasService.giveAccess({ canvasId, ...dto });
   }
 
   /**
    * Removes access to a single canvas for a single user
    * @param canvasId
-   * @param dto - an object containing 'userId'
+   * @param dto - an object containing 'personId'
+   * @param req - HTTP request object
    */
   @Delete('/:id/access')
   @UseGuards(AuthenticatedGuard, CanvasGuard)
   public async cancelAccess(
     @Param('id') canvasId: Uuid,
     @Body() dto: CanvasAccessDTO,
+    @Req() req: Request,
   ) {
-    const userId = dto.userId;
-    await this.canvasService.cancelAccess({ canvasId, userId });
+    await this.canvasService.cancelAccess({
+      userId: req.user.toString(),
+      canvasId,
+      ...dto,
+    });
   }
 
+  /**
+   * Gives access to canvases with tags from the given list for selected users
+   * @param dto - an object containing 'tagIds' & 'personIds'
+   * @param req - HTTP request object
+   */
   @Post('/access')
   @UseGuards(AuthenticatedGuard)
   public async giveAccessByTag(
-    @Body() dto: CanvasAccessByTagDTO,
+    @Body() dto: GiveCanvasAccessByTagDTO,
     @Req() req: Request,
   ) {
     await this.canvasService.giveAccessByTag({
@@ -291,9 +301,26 @@ export class CanvasController {
   }
 
   /**
-   * Adds a single tag to a canvas
+   * Removes access to canvases with tags from the given list
+   * @param dto - an object containing 'tagIds'
+   * @param req - HTTP request object
+   */
+  @Delete('/access')
+  @UseGuards(AuthenticatedGuard)
+  public async cancelAccessByTag(
+    @Body() dto: CancelCanvasAccessByTagDTO,
+    @Req() req: Request,
+  ) {
+    await this.canvasService.cancelAccessByTag({
+      userId: req.user.toString(),
+      ...dto,
+    });
+  }
+
+  /**
+   * Adds tags to a canvas
    * @param canvasId
-   * @param dto - an object containing 'tagId'
+   * @param dto - an object containing 'tagIds'
    */
   @Post('/:id/tags')
   @UseGuards(AuthenticatedGuard, CanvasGuard)
@@ -306,9 +333,9 @@ export class CanvasController {
   }
 
   /**
-   * Removes a single tag from a canvas
+   * Removes tags from a canvas
    * @param canvasId
-   * @param dto - an object containing 'tagId'
+   * @param dto - an object containing 'tagIds'
    */
   @Delete('/:id/tags')
   @UseGuards(AuthenticatedGuard, CanvasGuard)
diff --git a/src/canvas/canvas.interface.ts b/src/canvas/canvas.interface.ts
index 2585b74..7f36809 100644
--- a/src/canvas/canvas.interface.ts
+++ b/src/canvas/canvas.interface.ts
@@ -31,12 +31,13 @@ export interface CanvasMetadataUpdateCommand {
 
 export interface GiveAccessCommand {
   canvasId: Uuid;
-  userId: Uuid;
+  personId: Uuid;
 }
 
 export interface CancelAccessCommand {
-  canvasId: Uuid;
   userId: Uuid;
+  canvasId: Uuid;
+  personId: Uuid;
 }
 
 export interface GiveAccessByTagCommand {
@@ -45,6 +46,11 @@ export interface GiveAccessByTagCommand {
   personIds: Uuid[];
 }
 
+export interface CancelAccessByTagCommand {
+  userId: Uuid;
+  tagIds: Uuid[];
+}
+
 export interface CanvasAddTagCommand {
   canvasId: Uuid;
   tagIds: Uuid[];
@@ -90,10 +96,10 @@ export interface CanvasTagDTO {
 export class CanvasAccessDTO {
   @IsUUID()
   @IsNotEmpty()
-  userId: Uuid;
+  personId: Uuid;
 }
 
-export class CanvasAccessByTagDTO {
+export class GiveCanvasAccessByTagDTO {
   @IsUUID('all', { each: true })
   @IsNotEmpty({ each: true })
   @IsNotEmpty()
@@ -104,6 +110,13 @@ export class CanvasAccessByTagDTO {
   personIds: Uuid[];
 }
 
+export class CancelCanvasAccessByTagDTO {
+  @IsUUID('all', { each: true })
+  @IsNotEmpty({ each: true })
+  @IsNotEmpty()
+  tagIds: Uuid[];
+}
+
 export class CanvasStateFilter {
   @IsOptional()
   versionTimestamp?: string;
diff --git a/src/canvas/canvas.service.ts b/src/canvas/canvas.service.ts
index 75350fe..5711ff6 100644
--- a/src/canvas/canvas.service.ts
+++ b/src/canvas/canvas.service.ts
@@ -3,6 +3,7 @@ import { Repository } from 'typeorm';
 import { CanvasEntity } from './entity/canvas.entity';
 import { InjectRepository } from '@nestjs/typeorm';
 import {
+  CancelAccessByTagCommand,
   CancelAccessCommand,
   CanvasAddTagCommand,
   CanvasContentUpdateCommand,
@@ -168,7 +169,7 @@ export class CanvasService {
 
   public async giveAccess(command: GiveAccessCommand) {
     const user = await this.userRepository.findOne({
-      where: { id: command.userId },
+      where: { id: command.personId },
     });
     const canvas = await this.canvasRepository.findOne({
       where: { id: command.canvasId },
@@ -177,7 +178,10 @@ export class CanvasService {
       throw new NotFoundException();
     }
     let canvasAccess = await this.canvasAccessRepository.findOne({
-      where: { user: { id: command.userId }, canvas: { id: command.canvasId } },
+      where: {
+        user: { id: command.personId },
+        canvas: { id: command.canvasId },
+      },
     });
     if (canvasAccess) {
       return;
@@ -190,10 +194,20 @@ export class CanvasService {
   }
 
   public async cancelAccess(command: CancelAccessCommand) {
-    await this.canvasAccessRepository.delete({
-      user: { id: command.userId },
-      canvas: { id: command.canvasId },
-    });
+    let criteria: any;
+    if (command.userId == command.personId) {
+      criteria = {
+        user: { id: command.personId },
+        canvas: { id: command.canvasId },
+      };
+    } else {
+      criteria = {
+        user: { id: command.personId },
+        canvas: { id: command.canvasId },
+        isOwner: false,
+      };
+    }
+    await this.canvasAccessRepository.delete(criteria);
   }
 
   public async giveAccessByTag(command: GiveAccessByTagCommand) {
@@ -208,12 +222,39 @@ export class CanvasService {
       command.personIds.forEach((personId) =>
         this.giveAccess({
           canvasId: canvas.id,
-          userId: personId,
+          personId: personId,
         }),
       ),
     );
   }
 
+  public async cancelAccessByTag(command: CancelAccessByTagCommand) {
+    const user = await this.userRepository.findOne({
+      where: { id: command.userId },
+    });
+    if (!user) {
+      throw new NotFoundException();
+    }
+    const accessibleWithTags = await this.readByTags(command.tagIds, user.id);
+    for (const canvas of accessibleWithTags) {
+      const accessList = await this.canvasAccessRepository.find({
+        where: {
+          canvas: { id: canvas.id },
+        },
+        relations: { user: true },
+      });
+      accessList.forEach((access) => {
+        if (access.user.id != user.id) {
+          this.cancelAccess({
+            userId: user.id,
+            canvasId: canvas.id,
+            personId: access.user.id,
+          });
+        }
+      });
+    }
+  }
+
   public async addTags(command: CanvasAddTagCommand) {
     const canvas = await this.canvasRepository.findOne({
       where: { id: command.canvasId },