Advanced Actions to Show all Objects on the screen

Can you give more details, please?

I understand that you have 1 button on a slide, and when the user clicks that button, all other buttons would appear and become active?

• Create all the buttons
• Group the buttons with the exception of the unique button that has to be visible; I will indicate that group with the name 'Gr_buttons'
• Hide the group in output (Eye icon on Properties panel, see 1-2-3 Eye Buttons Mystery - Captivate blog )
• For the remaining button go to its Actions tab, choose the event 'Success' and open the dropdown list
• Choose 'Show Gr_buttons', no need for an advanced action for this situation, that simple command will do the trick.

If you don't want the playhead to be released when the button is clicked, don't forget to uncheck the option 'Continue Playing....'