Server Configuration > Access Control List Permissions > Copying ACLs
  
Copying ACLs
When working with ACLs, you may also want to create a new ACL based on the permissions in an existing ACL. You can copy the permission structure used in one ACL to a new ACL using the Copy ACL command in the Windchill RV&S administration client or the CLI.
CLI EQUIVALENT 
aa copyacl -g
To copy an ACL using the Windchill RV&S administration client