How to add something like "Tags" to the new note menu

I want my addon to create an extra text field like “Tags” at the bottom of the add note menu for every note type (just like Tags is there for every note type). I want it to say “Pre-reqs: ” where you can type the names of desired pre-requisite cards (with autocomplete features eventually). Do I just achieve this with a hook? And if so, which hook? I’m not sure how to add a gui feature to an already existing gui window.

Thank you