To confirm your orders:
Orders must be confirmed before they can be planned. To find unconfirmed orders, you can change the 'Order Status' on the Order Search page to 'Unconfirmed'.
From Order Details:
Clicking ‘Confirm’ will confirm the order and return to the Order Search screen.
Clicking ‘Confirm & Next’ will confirm the order and open the next most recent unconfirmed order.
From Order Search:
Single click to select any orders you wish to confirm, you can hold the Ctrl or Shift key to select multiple orders at once.
Confirm the orders by clicking ‘Actions’ -> ‘Confirm’