You should be able to see a button with an ⚡ one tap should you able to select the amount or two tap with a message, amount and if you want to make it public, private or anon. But yeah your client should be able to call your wallet to open that invoice in your desired wallet that support lightning.

by default the lightning address you enter on your profile is use the receive & send zap, some nostr client let you choose another wallet for sending zap