I've noticed that in some spaces a sub-group is created with the name <spacekey>-users in addition to the default confluence-users group.
But I don't understand the concept? It seems to me that these groups <spacekey>-users are created randomly as they are not in every space - not even all community spaces?.
Could you please explain to me how to get this <spacekey>-users group appear in every space?
Because we use a lot of communities with Bubbles it comes in very handy for a community space adming to update and synchronize his community members with the <spacekey>-users and only set permissions for this group instead of individuals.
But in some communities the <spacekey>-users group is not available and I don't understand how to create it.
Please explain the concept!