New users direct as a manager

I integrated my instance in a LDAP. It works fine and all new users are created by role “user”.

I wait that all new user is added in “manager” role.

This is possible?

Try to set the LDAP_GROUP_MANAGER_DN configuration variable with your current LDAP_USER_BASE_DN.
I don’t know if you need to set LDAP_USER_BASE_DN to somewhere, I would try first unsetting LDAP_USER_BASE_DN and setting LDAP_GROUP_MANAGER_DN, then if it didn’t work, set both to the same DN. Then, if it didn’t work, set LDAP_USER_BASE_DN to some DN and LDAP_GROUP_MANAGER_DN to the dn with the managers.