Peel off the backing on the Velcro attached to each of the 4 weighing pads, but leave the Velcro attached. Get ready to place a weighing pad down on one of the wheel markings. Place the pad so that there is an equal amount of Velcro showing on both sides, and the middle of the Velcro strips line up with the middle of the pad. Place all four pads this way. Once all four pads have been placed, roll onto the scale. You should feel stable and not roll when on the scale. Make sure all the weight is on the weighing platforms of the pads. Once you've done this, you're ready to use the scale! For guidance on using the scale with the Lilypad app, see the articles "How to use the Lilypad iPhone/iPad app" and "How to use the Lilypad Scale Android app."
Check out this video to see what placing pads on the mat looks like: