Call Automation from another

Hi,
I have an event automation which I call from IFTTT. I would also like to call it from another automation. I assume it can be done - I just can’t figure out the syntax.

Here’s the one I call from IFTTT

- alias: Garage Open
  trigger:
    platform: event
    event_type: garage_open
  condition: 
    platform: state
    entity_id: sensor.garage_state
    state: 'Closed'
  action:
    service: switch.turn_on
    entity_id: switch.garage_door

Now I would like to call it from this one;

- alias: Garage Open Auto
  trigger:
    platform: state
    entity_id: group.location
    state: home
  condition:
    platform: state
    entity_id: sensor.garage_state
    state: 'Closed'
  action:
    service: switch.turn_on
    entity_id: switch.garage_door

I haven’t figured out how to do this, so I’m simply replicating the functionality of the the first at this stage which I’d prefer to not have to do. Instead, I’d like to have no conditions, and just call the Garage open event - something like this;

  action:
    service: event
    entity_id: automation.garage_open

Any thoughts?

Thx
James

Write a script and call it from both

Thanks - I’ll give it a go,
JP