I have three forms in my project, and I have given app users access to these forms. If I decide I want to change access and an app user should now only have access to two of these forms - how would I go about changing this? It appears that once I make the change to form access in ODK central, it doesn't automatically update for the user in the app? The same for if I was to update a form (by adding a new question), how will this update for app users who already have access to that form?
Also if an app user needs to change to a different QR code (another app user with diffe, how would they do this?