A: Hi MM,

Thanks so much for your query. You can create unlimited courses and keep them as drafts if you won't be able to delete the courses if your students' subscription for that course is active. If there is no student whose course is active you can delete the course.
We are working on certificates, and it will be launched within a month of time.
For now, you can only use Zoom and BlueJeans. We have no plans of including Microsoft teams as of now. Microsoft teams also use BlueJeans by Verizon for video conferencing, I guess.

Have a great weekend.