This will depend on what client you are using. But really you just try to zap someone, and the client you are using (primal, Iris, Amethyst, etc see image) should tell you that you need to connect your wallet. If you need more help nostr:npub1gzuushllat7pet0ccv9yuhygvc8ldeyhrgxuwg744dn5khnpk3gs3ea...

I'm not using #nos but I imagine that in the app settings you should find a way to connect your Primal wallet through NWC. I guess it would require you to go to Primal where you would ask to create a new connection for your wallet, it would give you a QR code and you'd scan that QR code from #nos. ...

nostr:npub1wmr34t36fy03m8hvgl96zl3znndyzyaqhwmwdtshwmtkg03fetaqhjg240 ⬆️