Hello Everyone!
I've been trying to figure out how to set up the Active Directory portion of the authentication servers section. I was hoping that several vpn users would be able to log in with their AD account but I haven't been able to figure out how to properly do the setup. Here is what I am facing.

I'm trying to fill out the portion under the IP used for the server.
I have a group set up in AD as RDGroup which is in the XGroups OU which is then under X. This is what I have tried in that field with no luck.
cn=RDGroup,out=XGroups,ou=X,dc=X,dc=local
As per the searching user I am using the administrator account. I don't know if this needs to be set in a similar format to what is above.
I have also left the login attribute as sAMAccountName. But for troubleshooting I tried cn, Display Name, and Name.
Hopefully someone has the answers out...