Groups of lights in custom:mushroom_light_card

Hi,

I’m using mushroom cards to set up a new dashboard. I do it the YAML way.

How do I handle a group of lights? Should I declare a group first and then refer to that group or can I clutter 4 lights into one mushroom light card?
I would like to be able to double tap to get to the individual lights within that group and edit the settings per light.

The thing is that I am struggeling with groups anyway; I have groups declared in YAML, but I have also groups declared in Zigbee2Mqtt. What is the prefered way?