Yeah it might be worth joining their Discord server (I imagine they have one) and seeing if they can add it. Can't imagine it being too difficult to add a little check box to "private lease" - although I'm not a coder so have no idea haha!
I've pretty much leased out or delegated all my HP otherwise I'd help you out there man. I know @acidyo and OCD are looking to help support with specific communities so you might be able to reach out to him?