Construct new field in Detail View

So I’ve been dancing around this issue for days now. I’d like to add a + Button next to a field of my choosing. Instantiate a new field also with a button infinitely.

Similar to the emailAddress function, but with any field. Any help is appreciated.

Painting a clearer picture: Hypothetical:

If iI have a lawsuit record, and I want to add updates to a notes module or add a new entry with a date, file upload, description, etc each time a court date has passed with the new information, while keeping the previous entries. How could this be accomplished?