AODA for those that don’t know is the Accessibility for Ontarian with Disabilities Act. Americans would call this 508 Compliance. Captivate doesn’t do anything to register if a user is using a screen reader, however, if you want screen reader users to have a different experience you could include instructions in the screen reader text to perhaps use a keyboard shortcut to activate a button that takes them on a different path. Interactive objects (even transparent ones) can have keyboard shortcuts to activate an action to take them to a different slide or perform just about any other action you might need for them.