How do I set an admin user to see orders on all sites but nothing else?

This is how you set a Limited Group with access to orders on all sites
  1. First, create the group. Leave all permissions unset except the “Can view and edit orders” one.
  2. Next, add users to the group.
  3. Now, when those users log in, they will see all orders.
  4. Orders can be filtered as usual, including site filtering. However, they can also drill down in the site list to orders from a specific site.
  5. Attempts to do anything else, like access site settings or products or categories, redirect to the Unavailable Permission page.
Related article: Ch. 021. Admin Groups