Add field to form through PHP

Hey,

I am trying to find a way to add a checkbox field to a already existing form.
So, the form is already created and by turning a certain checkbox on, another checkbox will be added to a certain form.

Are there certain functions or hooks I can use to update a form so I can add this checkbox to it?

Thank you.
Kind regards,

Merijn Molenaar

• This topic was modified 6 years, 7 months ago by Merijn Molenaar.