It is the action that allows the element specified as a parameter to be set to the opposite of the current visibility value. If the Visibility value of the element is Visible, it makes it Hidden, if Hidden, it makes it Visible.
Click +Add Action under Properties panel.
Add OnClick → UIControl ⟶ToggleVisibilityOf action.
You can perform various operations for the added actions via Context Menu (B).
You can easily copy the action with the Copy option. Thus, you gain speed where action repetition is required.
With the Add Confirmation option, you can add a confirmation message for the action to work,
With Add Condition, you can determine that the action you add works in accordance with a certain condition,
You can easily delete the action added with the Remove option.