One thing I just found out last night:?
If you have subgroups, change the display name in main; it will populate to the subgroups which do not have a display field to edit.? I did have one instance where the display name was different in one of the subgroups than the others, but when I changed the name in main, it correctly populated in the subgroups.? I then changed the name in main back to what it needed to be, and the changes occurred in the subgroups too.
Beth