I am taking this as a rookie question. You roost (watch them fly up or locate them on the roost via a shock gobble) in the evening so you will know where to set up in the morning.

If you havn't done that the evening prior---you can use a locator call in the early morning to see if a turkey will shock gobble so that you can set up on it---or you can wait to see if they will gobble on their own.