spouse each booking stays - making sure no room change

So- forgive me if this has been asked before, but not sure how to search it.

If I book a stay using points, followed by my fiance booking a stay using reward certifications, is there a way to combine them into one stay to make sure they do not book two different rooms?

My assumption is to each make the booksing (for example me tues thru thurs, and her fr and sat), then calling them to let them know we are the same party and to book in one room?