If you have a Google Pixel with a family link, you can add an account to the device using the Google Family Link app. The app is available on both Android and iOS devices. To add an account to the device, open the Family Link app and sign in with your Google account. Then, click on the Accounts tab and select your family member’s Google account. If your family member has multiple accounts, you’ll need to select which one you want to add as an account for the device. Once you’ve added their account, you can use their username and password to log in. You can also view their photos and videos from their accounts on the device.