work_time-1.0.x-dev/work_time.links.menu.yml

entity.work_time.settings:
  title: 'Work time'
  description: 'Configure a Work time entity type.'
  route_name:  entity.work_time.settings
  parent: system.admin_structure
entity.work_time.collection:
  title: 'Work times'
  description: 'List of work times.'
  route_name: entity.work_time.collection
  parent: system.admin_content

work_time.admin_config:
  title: 'Work time'
  description: 'Configuration related to work time'
  parent: system.admin_config
  route_name: work_time.configuration