RYP's NFL Pick 'Em pool gives you the options to pick straight up or against the spread. If a commissioner chooses to pick against the spread, they can use RYP's spreads or manually enter their own.
To enter the spreads go to Commissioner console --> Point Spreads. The spread can be entered with the +/- of your preference. So if the Bengals are on the left side and you enter -1.5 (or 1.5), they would be the favorite. If you added +1.5 next to the Bengals, they would be considered the underdog.
When entering spreads manually, you are able to update them throughout the week. Spreads entered by RYP are not updated once posted unless there is a major error.
Commissioners can play around with the setting by putting in their point spreads in the commissioner console --> point spreads and then going to your pick sheet. You can then check out the layout. Underdogs are always on the right side of the pick sheet (visible under "Your Picks".