Hi,
Invoices are generated automatically after an order's status is changed to "confirmed". Then, you can print it with the "invoice" button when you edit the order details in the backend.
And in the backend, you can create new orders (or in the frontend) and you can change the status of the order (in the frontend, you need to pay for the order for that).
So regardless which version or edition of HikaShop you use, and regardless of whether you're doing it from the frontend or the backend, you can create invoices, yes.