Adding Active Directory Users to cPanel Account Group

Hello, Please excuse if this is posted in the wrong thread. I am looking to add Active Directory users to the group that cpanel creates when an account is added. I understand I have to hook into the create action to get my script to run, the problem is I can't seem to get the permissions to set correctly. For example, I create a cpanel account in WHM named jondoe.com, the user jondoe and the group jondoe are created. I than want to add the users in my active directory webgroup to the jondoe group. So one by one I will add them with usermod -aG jondoe username This action completes but the users still have no access to files or to even list the directory contents. I have not tried this with a local unix user yet, is there no support for AD users in cpanel? Thank You