Panther has the ability to fetch events by querying the G Suite Reports API. Panther will query the G Suite Reports API for new events every 1' minute.
In order for Panther to access the API you need to create a new 'G Suite App' and provide the app credentials to Panther.
Create a new G Suite App
The steps below can only be performed if your G Suite user has permissions to see your organization's Reports. If your user doesn't have such permissions, you can follow the steps here in order to create a new role with Reports access and assign the role to your user.