Open Menu → Vehicles & Equipment and go to the Equipment section. Tap Add equipment, pick the item, take a photo of the one you own, and tap Send. The photo comes from the camera, on the item itself, so a picture pulled from the internet does not pass. Catering cart, hand truck and insulated bags are the three items this screen holds.
What each status means. Pending verification and Processing mean the photo is in review. Verified means it passed. Update needed means it did not, with the reason printed under the status. Tap the card to send a new photo and it goes back into review, or tap Remove to take the item off your profile.