Solved my own problem. The 'create role' button is in the LHS menu, which is a bit different to how the documentation shows it.

Hi all, I have just installed Admidio and it looks great for our little charity. However I'm unable to add fields, roles etc, and I suspect this might have to do with permissions in the file system. Is there a guide anywhere that specifies read/write access for user, group, world etc? Apologies in a...