When selecting multiple users, there an option to "Add Group", this takes the selected users and begins the group creation process.
However this feature is lacking something even more useful! The ability to add users to a pre-existing group!
There should be an option to "Add Users To Group" because its very unlikely that we admins would be needing to create a new group every single time.
This would benefit us as well. There are many user types that should be available for automatic enrollment into groups, like "Is Admin" or "Is Manager." Until those are availalbe, this would make the manual process of updating groups much easier, and does not seem like a large technical lift.