How do I enroll in Google Pay™? To enroll in Google Pay™ within the Alliant Mobile Banking app, select your Checking account or Credit Card account and follow the instructions below. 1. Select "Manage Account" and tap "Add Card to Google Wallet." 2. Tap "Add to Google Pay." 3. Once confirmed, click "View in Wallet." 4. Verify your identity with your fingertip or pin. 5. If you wish to set this card as your default, return to card management and set card as default.