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

pm_board.type_add:
  title: 'Add Board type'
  route_name: entity.pm_board_type.add_form
  appears_on:
    - entity.pm_board_type.collection

pm_board.add_page:
  title: 'Add Board'
  route_name: entity.pm_board.add_page
  appears_on:
    - entity.pm_board.collection
    - entity.pm_project.canonical
    - view.pm_board.collection

pm_board_column.type_add:
  title: 'Add Board Column type'
  route_name: entity.pm_board_column_type.add_form
  appears_on:
    - entity.pm_board_column_type.collection

pm_board_column.add_page:
  title: 'Add Board Column'
  route_name: entity.pm_board_column.add_page
  appears_on:
    - entity.pm_board_column.collection
    - view.pm_board_column.collection
    - entity.pm_board.canonical