Click and reveal, next button disabled until all categories are viewed
I'm working on a project and I need help with some interaction after all sections are viewed. Sorry, I am new at this. Here is what I am trying to accomplish.
Main slide has 4 rectangles/buttons and the next button is disabled upon entry (each button has a state of visited with a green check mark). Each category will lead to a separate scene (Scene 1, 2, 3, 4). When the first category button is selected and the user is taken to the first scene, the final slide "next" button will trigger the main slides visited state with green check mark. Once all categories are viewed and all green check marks (visited states) are triggered I would like the next button to change to active so the user can advance to an assessment.
How can I accomplish this? Should I use true/false conditions? What is the easiest way to set this up?
Thanks in advance.