Log in to your account via the AR app. Tap the bubble icon in the bottom right, then the magnifying glass icon above it. Type in the patient's name in the search box and tap the profile.
Once you're on the patient's timeline, search for the procedure you want to add a drawing to. Hit the edit icon next to the trash icon.
Important note: Adding a drawing to the photo won't add a product to the photo. To add a product to the photo, tap Select Product/Package at the top, hit the product you want to add, and then tap twice on an area in the photo to add an injection marking.