eca-1.0.x-dev/modules/ui/eca_ui.links.menu.yml

entity.eca.collection:
  title: 'ECA'
  parent: system.admin_config_workflow
  description: 'Create, edit and manage ECA models.'
  route_name: entity.eca.collection
eca.import:
  title: 'Import'
  parent: entity.eca.collection
  description: 'Import an ECA model.'
  route_name: eca.import
eca.settings:
  title: 'Settings'
  parent: entity.eca.collection
  description: 'Configure ECA settings.'
  route_name: eca.settings