When someone creates a speaker proposal record, immediately following the creation the logged in user is the primary contact AND the presenter for the submission. This is because at this point there is no other contact except the submitter who is related to this submission. So if a student is using their own profile to create a speaker submission record for their professor, then the student is currently the primary contact and presenter.

Once the submission is created, the student may add/edit the co-authors.

At this next step, the student may add their professor as an author.
Once the author is added, the student may mark the professor as the presenter.
Then the student may remove their own name as an author on the submission.
(The student may add as many other co-authors as desired.)

From that point on:
- the student remains the submission's primary contact
- the professor is the submission's presenter

Both the student and the professor may edit the submission until you close access to the site.