Create users in organization unit in LDAP

Hello. I was able to setup LDAP successfully and I can also use the registration app to create LDAP users. But there is one problem in my config and I don’t know how to fix it. Users are generated just under the base of the LDAP instance and not the organizational unit where all the users are.

How can I fix this?

The user was created as uid (named marcel) and I want that he will be created in the ou=users group. My config looks like this (without ou:users in the dn it works and now with it nothing works):