Thank you for taking the time to respond. Unfortunately I cannot assign everyone of a certain role to the same class. They are all students and therefore Subscribers. And I cannot just do it for new groups when they are created.
I have an easy way to delete members in bulk, via the Bulk Actions on the Groups->Edit page.
I have an easy way to invite members, via the front end Invite page.
But I do not have an easy way to directly add members, without going through the very slow search dialog box for each name on the Groups->Edit page. Why can’t that be a set of checkboxes?