Thank you for your interest in BSS extension.
​The Magento 2 Reorder Product List helps customer to list all products they have ordered before & from that, they can be able to reorder multiple products from the list.
​If you want to have the function from the backend, we're afraid that our extension doesn't support this feature.
Since you are looking for a solution to allow admin to create an order from the backend, may we suggest you to have a look at our M2 Login as Customer, it will help you to login to the store under the account of actual customer & perform all the actions like normal customer.