Sharing with "Everyone" in Teams Folders

Hi!

I'm looking for an answer about the "Everyone" option. Our organization has many seats from different departments on one account. Within the admin view, those seats are separated into subteams. We do not need visibility to courses across departments. Currently, it seems that the only option we have is to manually add users one by one to create subteam visibility. Is there any way to pull in or set up a group by subteam for ease of sharing courses in Rise?

Thanks!