How to manage users with IDM in OO 2018.05


I installed Operation Orchestration 2018.05 (central designer) with IDM Service. I would like to know if its possible to create custom users into this IDM because I don't like the default IDM users. I'm thinking that should exists IDM administration to manage these users but I can't find it.

Somebody knows how to do that? maybe I have to configure IDM LDAP but I don't know where I can get the information that I need to configure LDAP correctly.