I wrote a Home Assistant Blueprint that will call multiple lights at a time in a loop.
[Z2M] Inovelli VZM31-SN Blue Series 2-1 Switch LED Notification Script - Blueprints Exchange - Home Assistant Community (home-assistant.io)
I haven’t had time to group switches together in Z2M so I haven’t tested this on Z2M groups. But it works great when calling single or multiple switches at a time.