Teams meeting, participants

Hi,

When yoou arrange meeting from a Team channel (or Teams calendar and choose a channel) Everyone in the Team gets and invitation (if I understand it the righet way).

But what are the Add compulsory participants (and +Optional) for. What is the use of them?

In this Excample everyone at the Team: Teams kurs will get an invitation. So why add other users? Is it for users not in the Team?

- Geir