Large text entry box for [?Prompt] or similar

I have a Custom Entity field called “Notes” which can get pretty long.

I would like to give staff the ability to view and update customer note while they are adding orders to a ticket (without having to go in to the edit entity screen).

This can be accomplished through a standard [?Prompt] but I was wondering if it would be possible to have a large editing area - possible someting like the edit area we get for ticket notes?