Great question and it took some digging. I initially went to the settings to look for it (naturally, in my opinion). nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpzamhxue69uhhv6t5daezumn0wd68yvfwvdhk6tcpz9mhxue69uhkummnw3ezuamfdejj7qgwwaehxw309ahx7uewd3hkctcscpyug

Anyway, long press the zap icon under a note and you'll see zap settings. I just copied the info in Minibits and #Amethyst pasted all the data automatically when I clicked paste in one of the fields.