It was so easy getting this working I didn't know how to get it working!
What I had not fully understood yet was the settings for the LDAP Authentication group settings. It was not clear at the time that this was to allow groups to be authenticated. Now that I have my group settings properly setup. I can enter the group into the repository's permissions and like magic the repositories show up for the users in the LDAP group specified.
For LDAP authentication against Active Directory I have the following set
Group Attribute Name: member
Group Search Filter: (&(objectClass=group)(member={0}))
Groups Unit: OU=Groups,OU=XXX Corporate
For the permissions in each repository all that I enter now is the CN of the group. Say "XXX Developers" and it works.
Thank you for your help on this.