workflow_participants-8.x-2.x-dev/modules/workflow_participants_auto/workflow_participants_auto.routing.yml

entity.workflow.auto_participants_form:
  path: '/admin/config/workflow/workflows/manage/{workflow}/participants'
  defaults:
    _entity_form: 'workflow.workflow_participants'
    _title: 'Automatic participants'
  requirements:
    _entity_access: 'workflow.edit'