MSGCU's NEW Mobile Banking: Linking your MSGCU accounts under one username If you have more than one MSGCU account, you can now link your memberships instead of having to log in to each separately. To get started, make sure you have the account numbers of each MSGCU membership you'd like to link. After you've logged in, open the menu, then select Link Membership. Enter the account number of the MSGCU membership you'd like to link and select continue. That's it! You can now view and perform transactions for both accounts with the same username going forward. You'll be taken back to the accounts overview screen after clicking done. Your linked account will now display on the Accounts screen moving forward. And as always, we're here to help. Visit a local branch, chat with us online or give us a call.