Thanks it's almost that : If the user have the permission to write in a sub-category, not the entire category, the title of the category is not display :/
Example, for my user, the rights are :
-Organisation
Sub1 (OK)
Sub2 (OK)
-Communication
Sub3 (OK)
Sub4 (NOT OK)
OK : can access to the category
So in my drop-box, with the modification you send me, I have :
-Organisation
Sub1 (OK)
Sub2 (OK)
Sub3 (OK)
And I would like to have :
-Organisation
Sub1 (OK)
Sub2 (OK)
-Communication
Sub3 (OK)
You understand ?
Thanks ;)