Go to receive on WoS, enter amount, you will get an QR code and LN code. You can copy this code, open Alby, goto send, past the generated code and send.

This is one way.

Another possibility is to open WoS, goto receive, note down this email like address, open Alby, enter this email like address as target, enter amount and send. So you don’t have to specify the amount upfront…