ACT HomePro ZTM230

I have included this 2 gang wall switch and it shows up on UI5, but I can only see a single switch. I can’t see the 2nd gang at all. Does anyone know how to do this?

In the UI5 Devices section, under the Scenes tab, there are entries for scenes to be activated when the buttons are turned on or off, but there’s no way to set these.

Any ideas?