crm_core-8.x-3.x-dev/modules/crm_core_user_sync/crm_core_user_sync.links.menu.yml

crm_core_user_sync.config:
  title: 'User Synchronization'
  description: 'Manage CRM Core user synchronization settings.'
  route_name: crm_core_user_sync.config
  parent: crm_core.config_overview
  weight: 0