Programing tutorial for Spring Acegi LDAP?

[datnus]

Hi all,
I'm rather new to Spring Acegi LDAP.
Currently, I use Spring framework for my portal. For security part, I use Acegi LDAP.
I managed to integrate Acegi LDAP into my portal.

However, I would like to implement an user administration page in my portal after I log in successfully, i.e.: create/delete (LDAP) group and users...using Acegi Java API

Is there any tutorial to show how to use acegi java api to create/delete LDAP group and users?
If it's not possible to use acegi api, is there any workaround to add/del groups and users after I log in to the portal using Acegi?

I've googled around already. However, most of the tutorials only show me how to configure Acegi authentication and authorization.
Thank you very much for your help :-)