Manage users authentication and login

Hi everyone,

I am using NC v20.0.6 on Centos 7 server.
So far, we use a LDAP to manage our authentication and we would like to turn it off.
So, we would like to modify all of the uid and authentication system on each sessions.
I’d like to know if there is a way to modify all of the uid and if we can use the sessions as local sessions. May be with OCC commands ?

Thanks in advance