Selecting specific contacts and assigning them a number in the app enables your watch hands to move to the assigned number indicating which contact is texting or calling.
In the Devices page scroll down to Alerts & Notifications section and select “App Notifications.” Tap “Calls” or “Texts” then tap “ADD CONTACT” on the bottom. Scroll through and tap desired contact. Assign the number watch hands should move to when receiving a notification from specified contact. Tap “Next.”