5
Marco you have access to the demo site, you will see that when you login as the test user with full view there is like 9 Main Links on top in the main navigation of the theme.
The idea is to have practically 9 sites in one using only permissions, I started testing permissions with "essentials" disabling all the Main Links except "essentials main link", essential user will only see essentials (this would be the pattern for all the sets).
I only changed permissions on the Main Links, not touching the Sub Links permissions. And then when I went to look what happened to the main top menu bar where multimenu is in the theme and saw the dropdown
...all the Sub Links from the Main Links that I had disabled for essentials group moved inside the essentials Main Link; because all the Sub Links permissions didn't change automatically when I did the change to the Main Links.
It be better if Sub Links permissions would be set automatically according to the permissions put on Main Links.