To add users to Microsoft Teams in bulk you will need to be an owner of the team. You will need to know your class prefix, number, and section number.
To add the Fall 2023 section of BUS300.008 you would do the following
If you're a team owner, go to the team name in the teams list and click More options
> Add member.
Type 2023FA-BUS-300-008 (For the specific section as listed above.... You will want to use your term, class prefix, number and section).
When you're done adding members, select Add.
Select Close. People that you add to a team will receive an email letting them know they are now a member and the team will appear in their teams list.