Tuya TS110E dimmer + manual wall switch

Just bought a Tuya Zigbee 2 gang dimmer and successfully got it paired with HA and ZHA.
I plan to use it together with a mechanical momentary switch as well, in case HA goes down.
But I’m having trouble with setting up the device’s lowest light level for the mechanical operation, so users won’t dim it down passed the lamps minimum level. As it is now, it dims right down to darkness if I hold the switch down for too long.
Anyone here that have been working with this device and setup and managed to program the low and high light levels into the device itself?

Cheers, Pete