When we have to click on a UI element on the screen, we generally use the Click activity. It is very easy to use the Click activity, as illustrated by the following example:

1. Drag and drop a Flowchart on the Designer panel. Search for mouse in the search bar of the Activities panel. Drag and drop the Click activity. Right-click on the Click activity and select Set as Start Node.
2. Double-click on the Click activity. Click on Indicate on screen and indicate the UI element you want to click on:

Hit the Run button to the see the result.