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

administer bat_booking_bundle entities:
  title: 'Administer booking types'
  description: 'Allows users to add booking types and configure their fields.'

book units:
  title: 'Book units'
  description: 'Allows users to access booking page.'

permission_callbacks:
  - Drupal\bat_booking\BookingPermissions::permissions