When you already have a board with people listed on it, and add a few new fields, can you push a form out to them to ask them to answer info. for new fields, without it causing a new row to be created?
Welcome to the community
At the moment, that is not possible to do in monday natively.
What you can do is to have them fill the form and use an app like the Duplicates and Uniques app to merge the incoming data with the existing data automatically.
Here is a demo of how the merge works.
Hope this helps
Great question - this is one we get asked a lot. There are a few 3rd party apps/integrations you can utilise to get you past this hurdle and meet your needs.
Hope that helps find some options for you - here if you wanted to discuss further