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I am trying to create a booking tool for oral examination. I managed to create a form where the student can select a hour of his/her choice (in a list) and when submitted, that time slot is no longer available for other students. So far so good.

But I noticed that students can add+ multiple slots; I would like this to be limited to 1. How can I fix this?

Additionally is there a way that students can only submit the form once?

If the field in question is a Link to Another Record field, make sure “Allow linking to multiple records” is turned off


If the field in question is a Link to Another Record field, make sure “Allow linking to multiple records” is turned off


Thank you very much, problem solved!


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