Bulk Policy Assignment for Teams Users

Teams supports the ability to assign policies to up to 5,000 users with background jobs. This makes it much easier to assign new policies to large groups of users. Unless you like writing your own PowerShell scripts to handle Teams policy assignment, this is definitely something that all Teams administrators need to know about.

https://office365itpros.com/2020/07/08/bulk-policy-assignment-teams-users/