Harmony one device as a Switch

Hi, i have configured my Harmony in Hassio. Worked perfect.
Now i have configure our Christmas LED Lights in the Harmony and i can now turn on and off the Lights from Hassio. (I use Nodered for automation)
Now, i would like to integrate the LED Lights to Googleassistant.

How can i create one “identity” for an Device in Harmony, so this is synced to googleassistant integration?

Can someone help?