Vanish:

This activity is used to get a confirmation if the image (input) disappears from the screen.

How to use vanish activity?
1.    Open a project.
2.    Search for Vanish activity and drag and drop it to the workflow.
3.    Double click on the activity and select the capture symbol.
4.    You will be enabled to snip once the timer ends.
5.    Select and snip the area you wanted to vanish.
6.    Execute to see the output.

Technical Reference: