How do I add a network to my TokenPocket?

Could you please provide a step-by-step guide on how to add a new network to my TokenPocket wallet? I'm having some difficulties navigating the interface and would appreciate any clarity on the process. I've heard that TokenPocket supports multiple blockchains, but I'm not sure how to incorporate a specific network I'm interested in. Is there a specific setting or menu I should be looking for? Additionally, would it be possible to add custom networks that are not pre-listed in the app? Thank you for your assistance.