settings connections mobile hotspot and tethering mobile hotspot xfinity.app.link/setupinternet To set up a username and password just follow these easy steps: 1. Go to xfinity.com and sign in to your account. 2. Click on the Account icon. 3. Select Account and Identity. 4. Scroll down to the Account Details section to see the users. 5. Pick a user to set up or invite a new user by entering their info and sending an invitation. Once the new user accepts the invitation, they can create their Xfinity ID and password.