If you are using Windows 10 v1709 or earlier, you can add TaskView to the context menu. If you are using Windows 10 v1803 or later, you can add Timeline to the context menu without using any third-party software. Although Task View and Timeline are different, opening TaskView will open up the Timeline as well on Windows 10 v1803. Therefore, you can add TaskView in the context menu and open up the Timeline using the same.
Add TaskView to Context Menu
Now, open Registry Editor. For that, press Win + R, type regedit and hit the Enter button. After opening, navigate to this path-
In the shell key, you need to create a sub-key. To do that, right-click on the shell, select New > Key and name it TaskView.
After that, you need to create a sub-key under TaskView. For that, right-click on TaskView > New > Key and name it as Command.
After creating them, it should look like this-
Now, go to the Command key. You should find a Default string value on your right-hand side. Double-click on this and set the value as follows-
Click the OK button to save the change.
Once you have done this, you should find the TaskView option like this in the context menu-
Hope you will find this tutorial useful.