bt_cms-8.x-1.x-dev/bt_cms.routing.yml

bt_cms.add_block:
  path: '/app/website/blocks/add'
  defaults:
    _controller: '\Drupal\block_content\Controller\BlockContentController::add'
    _title: 'Add custom block'
  options:
    _admin_route: TRUE
  requirements:
    _permission: 'administer blocks'

bt_cms.website:
  path: '/app/website'
  defaults:
    _controller: '\Drupal\bt_core\Controller\AppController::content'
    _title: 'Website'
  options:
    _admin_route: TRUE
  requirements:
    _role: 'bt_add_forum_discussion+bt_moderate_comments+bt_create_content+bt_edit_publish_content+bt_build_block_pages'

#bt_cms.website_blocks:
#  path: '/app/website/blocks'
#  defaults:
#    _controller: '\Drupal\bt_core\Controller\AppController::content'
#    _title: 'Blocks'
#  options:
#    _admin_route: TRUE
#  requirements:
#    _role: 'bt_admin_blocks'