Hi,
Would you save the data the user enters locally to his computer or to some kind of a remote database?
Which characteristics constitute "a specific kind" of input field? A label appearing near that field, field type, name of the field...?
If "a kind" of the field is deterministic category, then this shouldn't be too complicated of a task.
(btw I see you posted the project on Upwork too, but I'm out of bids there. :) )
Kind Regards,
Vladan