Yes, I need to know before buying a license whether there is such an opportunityYou are getting into the level of what is considered support... and that should be asked in the appropriate area.
Now is you question more of "can I do this?"
I tried to do it on the demo version, but I could not do it. Is it possible to show the settings? or can there be a plug-in already ready for xenforo that would make the forum work on such a structure?This can be done with the "route filters" in the XenForo Admin Options.