How do I add a joint owner to my account(s)? To add a joint owner who is currently a member of Glass City, please click here for full instructions. To add a joint owner who is not a member of Glass City, please click here for full instructions. By Glass City Federal|2023-05-08T16:51:56+00:00July 8, 2022|Home Mobile Banking|Comments Off on How do I add a joint owner to my account(s)? Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Glass City Federal