When you examine the Appearance properties of a schedule, say for doors or windows, you are teased with a couple options that are inaccessible.
Those are only accessible when you create/edit a title block family and deal with a Revision Schedule.
Only revision schedules can fill out Bottom-to-Top and/or have a fixed schedule height assigned, sorry!
[Edit: Oh, when I highlighted the images I included the check box for "blank row before data", obviously that is available in either schedule situation. I should have limited the width of the box.]