In this video tutorial, I got a message from Anjalli Pawar about disabling the Submit All on the majority of slides. Not a complicated solution but I think this accomplishes what Anjalli was looking. At least I hope so. In either case, feel free to use this approach to have only one final submit button at the end of your quiz but still can move about the exam freely.
In this video tutorial, I show you how you can replace dozens of conditional advanced actions by creating a shared action which can be reused multiple times.