If there are multiple users using the same Eufy account, each user will need to create his/her own user profile by entering gender, age, and height. Each user will then need to measure himself/herself first under his/her profile page and slide to the next page of the other user to measure the next user's body weight, then the scale has the record for both of them. When they use the scale next time (without opening the app and sliding to the profile page), the scale will sync the measurement data to each profile page accordingly as long as the bodyweight difference between the two users is more than 3kg/6.6lb. If the bodyweight difference between the two users is less than 3kg/6.6lb, they will need to manually slide to the main profile page on the app, then stand on the scale to record the weight measurements correctly.