For all pop-windows displaying text that Screen Writer Studio can automatically insert, you can start spelling out the word and it will move the prompt to the word that is the closest match. In addition, if the word you type in is different from the start of any word in the list, Screen Writer Studio will consider that a new word and add it, not use the closest match in the pop-up window.
The details of the pop-up boxes may seem a little complex. But the result is that the pop-up box almost always is doing what you think it should do. And in return you not only save a bunch of typing, but you are using the exact same text for the same character each time, instead of mixing Dave, David, etc.