Rest of Project options:
To get started, select two icons for the Play and Pause button state.
Define a unique name for the Play and Pause icons.
On the first slide, the Pause button eye should be visible, and the Play button should be hidden as shown in the image.
Select the “Rest of Project” from the “Display For” dropdown.
When the Rest of Project option is selected, make sure the option “Place Object on Top” is selected which prevents the object from being hidden by other items on subsequent slides.