This is not function of the switch or remote. This functionality of Mariano’s Zigbee Light driver. He added increase/decrease capabilities for Light level and White Temperature.
Only thing that I do is set up actions for buttons like shown below. Each push of the button increases/decreases light level by 10% or changes White Temperature by 100K.
Zooz controller:
Button actions:
I am now doing same with Ikea buttons for different lights.