pm-4.1.x-dev/modules/pm_board/pm_board.links.menu.yml

entity.pm_board.collection:
  title: 'Board'
  route_name: entity.pm_board.collection
  parent: pm.admin.content_items
  description: ''
  weight: -15

entity.pm_board_type.collection:
  title: 'Board types'
  parent: pm.admin.content_settings
  route_name: entity.pm_board_type.collection
  weight: -14

entity.pm_board_column.collection:
  title: 'Board Column'
  route_name: entity.pm_board_column.collection
  parent: pm.admin.content_items
  description: ''
  weight: -15

entity.pm_board_column_type.collection:
  title: 'Board Column types'
  parent: pm.admin.content_settings
  route_name: entity.pm_board_column_type.collection
  weight: -14