I am in a team of people organising an event. .
So in the picture, for the first session, each person only attends one of the strands and not both.
Is there a way of preventing oversubscription, such that if in the Google Form 50 people select Strand B (which is the max we can have for each strand) and submit the form, the option for Strand B disappears in the Form so that it can no longer be selected?