Fenby, our voice activated composer assistant is currently in BETA, and will only work if your main device/Windows region (and language) is set to UK, U.S or Canada (English). We do hope to bring the assistant to more territories and languages soon.
If you find that the Composer Assistant doesn't hear you, or pick up any sound from your microphone, you may have blocked the app from accessing the microphone.
Open the Windows settings app, and choose "Privacy". From there, make sure StaffPad has access to your microphone. The microphone is only activated whilst Fenby is listening to your voice commands.