I have a custom event template on which I hide some fields based on whether someone is registering themselves or an additional participant. There are 2 different price options, one for the main registrant and one for the additional participant. The price set needs to have required fields for each situation. How can I get civi to ignore the required fields if they are hidden?

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AFAIK this cannot be controlled in CiviCRM ATM. However there is an extension(from Allen Shaw) for conditional filtering on profile but I guess this will not work in your case.

I would suggest you to create an extension and use combination of buildForm or ValidateForm hook to achieve.



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