Use case: For the completed orders that do not require invoicing.
-First set the completed orders to "ready to invoice" as if you will create an invoice. (see more info HERE)
-Navigate to to invoices->ready to invoice tab from here
-Apply your filters and select the orders (max 100 at a time)
-Then follow with "create invoice" button as if you will create an invoice
-Mark these as "do not invoice" instead and save:
These orders will then have status "do not invoice" and will not appear in the list of orders unless you filter on status specifically or unless you go to the tab of orders what has "do not invoice" status under invoices tab.