admin_ui-8.x-1.x-dev/admin_ui_support.links.menu.yml

admin_ui_support.admin_ui_support_settings:
  title: 'Decoupled Administration Interface'
  route_name: admin_ui_support.admin_ui_support_settings
  description: 'Decoupled administration interface integration settings'
  parent: system.admin_config_system
  weight: 99