Access to some sections or categories are restricted to specifics users.
(send a mail or open a ticket to request the access to it)
This is a slow process
IDEA :
In case of Unallowed access, present the items below in addition of the message "not enough authorizations"
REQUEST ACCES TO...
1. This Section and all its categories
2. This Category only
An approval Requst will be sent to the Administrator
On click on line 1 or 2, send a mail to the admin with message below
User xxxxx request to access to .....
Do you approve it ?
YES / NO
On click on "NO" open a frame with "Note to communicate to the submitter : ......."
(by this way Admin is able to communicate a reason)