Security module - LDAP - how to give permission to different users?

I’m trying to implement the Security module using LDAP.

I followed the wizard setup, and linked it to my custom html template.

The login page works, If I use our user credential (from the users that it retrieves from LDAP), I can login!

What I’m missing is, how do I manage user permissions?

If I go on the user application that the security module created, I only see the administrator user, which I had to create manually when setting Security Module up!

How can I see the list of all the users I get from LDAP and give to each a different set of permissions?

During the Security module setup, where I need to put the info of one user as administrator, can it be any user? or it must have special permissions inside the LDAP?

Thank you