button issues

Hi all, I recently posted my first issue that I'd had with SL2 (previously I've managed to find answers online)!

I've been building a course for a client and the main menu has several buttons - each button links to a specific section and when that section is completed the button state changes to 'complete'. The initial issue I had was that I wanted each button to appear only on completion of the previous section. Thankfully this has been sorted by changing the initial state to hidden and adding triggers when the each state is completed.

 

The problem I now have is this:

The course will be used by managers and non managers

users will determine their role by clicking on a button on the previous screen

the last section before the quiz is to be completed by managers only

the quiz button should then link into 1 of 2 quizzes (each in a separate scene dependent on role level)

 

I'm struggling to get this to work how I want it - I'd assume setting a T/F variable on the initial button where the user determines their role could then be used to control what optiona appear in the main menu but cant get it t work.

Any help is appreciated - I've attached a blank version of my file for people to get their head round.