There are two sections in the app where you can bet on player props. The section with the most complete selection of player props is within an individual game's preview page. Click on the game you're interested in and then tap the 'Props' tab at the top of the page. In the top left corner of this page, you will see the prop category filter which will allow you to pick from a number of available prop options.
On this page, you can take either side of any of the props we've gathered from around the market. The other section in the app where player props are found is the 'Props' tab within each league's page. However, this section does not show every different option or the ability to bet against the Top Props recommendation. These pages only show the props we believe have the best value based on our projections.