Adding a group for a popup?

Hi all

please excuse my terminology very new to yaml/HA

I’ve added an automation/group that allows me to choose radio station to stream to chromecast devices (see here Chromecast Radio with station and player selection)

In my frontend it shows up as a group.chromecast_radio

Is there a way to add this to a button in floorplan so that group pops up and allows me to access the dropdowns ? I would like the standard popup the same as when click the group name in HA frontend.

I tried adding all the entities from the group and then grouping them in floorplan.yaml with toggle, then the group to the SVG but no luck

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Hi did you got sorted with this?