Can we automatically fill a field based on the value of another one?

Hello

Is it possible to automatically fill a field according to the response of a previous field? for example Question 1 Age? (Free answer with a number) Question 2 Choose category (2 choices) - Under 21 - Upper 21 I would use the following condition: If a value greater than 21 is answered for question 1, the default choice for question 2 is "Upper 21" thank you in advance for your response

Yes, it is possible to insert text or a calculation into a field using conditional logic. We have a guide on that here: https://www.jotform.com/help/268-Conditional-Logic-Inserts-Text-Calculation-Into-A-Field

We also have a general guide on creating smart forms using conditional logic here: https://www.jotform.com/help/57-Smart-Forms-Using-Conditional-Logic

I hope this helps. If you need further assistance please let us know. Thank you.