Access for a non-administrator to AAM

Hi,

I need to allow a non-administrator user to manage AAM settings on posts.
I am WP 5.7.2 and AAM 6.7.7

I see :
https://aamplugin.com/reference/plugin#page-capability
and :
https://aamplugin.com/article/how-to-manage-access-to-aam-page-for-other-users

First, what is the difference between these 2 pages ?

I followed the last one :
– creating ‘aam_manager’ capa,
– creating ‘aam_manage_users’, ‘am_manage_content’ capa,
– affecting these 3 capa directly to user

but my user cannot edit AAM settings in his posts. He got a ‘Access Denied’ on the AAM block.

What have I missed ?

BR

Sylvain