How do you zap someone from the Shosho app? For example, I see Sergio's stream on there, but I don't see a zap button to send him zaps. Or is Shosho just an app for streamers to broadcast and view incoming zaps, while viewers actually zap through another platform like Zap Stream? For instance, when I'm streaming IRL using the Shosho app, I notice users on Zap Stream are zapping me—so is that how it's meant to work?