Help moving google_calendars.yaml to helpers

I currently have a bunch of sensors defined in my google_calendars.yaml file and would like to move away from the file and use a helper or some other function available in the GUI

Example, I have WFH as an all day event in the calendar:

  • device_id: WorkFromHome
    ignore_availability: true
    name: Work From Home
    track: true
    search: “WFH”

Is there a way to do this with the GUI? I’ve looked/googled and can’t seem to find anything. Any help would be appreciated.