gcommerce-8.x-1.0-beta5/modules/gcommerce_profile/gcommerce_profile.links.action.yml

group_relationship.group_profile_add_page:
  route_name: 'entity.group_relationship.group_profile_add_page'
  title: 'Add existing profile'
  appears_on:
    - 'view.group_profiles.page_1'

group_relationship.group_profile_create_page:
  route_name: 'entity.group_relationship.group_profile_create_page'
  title: 'Add new profile'
  appears_on:
    - 'view.group_profiles.page_1'