bat-8.x-1.x-dev/modules/bat_fullcalendar/bat_fullcalendar.permissions.yml

administer calendar events:
  title: 'Administer calendar events'
  description: 'Allows users to manipulate events on calendar.'

view past event information:
  title: 'View past event information'
  description: 'Allow users to view event info in the past (especially via event reference field).'