I am new to this, and have quite a few restraints on how to perform this duty.
I have a Microsoft Form that I am using as a scheduler for different classes we are teaching. So for example, we have three CPR classes that have a cap of 8 people. In my form I branched the three classes with the form ending with "Name of CPR Student" including the three different dates. All I need it to do is count how many submissions have been sent for each individual class and immediately either send a "Congratulations, you're registered" email to the person registering if it is under the cap limit or a "I'm sorry the class is full" email if it is beyond the cap limit.
I can't figure out what I'm missing where it will count that specific part of the form.
I am aware of Microsoft Bookings and we don't have the money for it. I also do not have ability to add to our Sharepoint.