Under NAR select the Per Group Defined Network Access Restrictions.
Select the AAA clients you want the group to access.
Use the wildcard mask in the port and the address field.
You can also group the devices which you want to give access under a seperate NDG and in the NAR give permission to only this NDG for the group. In this way you may need not add individual AAA clients
HTH, rate if it does
Narayan