how could I Limit the maximum selection of each time slots

for example, the Maximum people who select 2:00-2:15 is 20, 2:30-2:55 is 20.... Thank you for your prompt answers

Hi there,

Limiting an option in the single choice field is not possible. For this purpose, I would suggest that you use the appointment field. This field is specifically created for meeting users appointment needs.

You can check the guide below for instructions on how you can use it.

https://www.jotform.com/blog/how-to-schedule-an-appointment/

Let us know if you have any questions.

Thanks