Select Orders to Ship
Go to the Unshipped Orders tab.
Select the orders you want to ship by checking each one, click Visible to select all orders currently shown on the page, or click All to select every order in the Unshipped Orders tab (including those across multiple pages, where applicable).
Click Ship Selected Orders.
A new tab will open for each carrier with assigned orders.
The selected orders will move from Unshipped Orders to their respective carrier tabs.
Open each carrier tab and process the orders for that carrier.
Note:
Carrier tabs in ReadyToShip appear and disappear automatically based on whether orders are assigned to that carrier. If a tab is not visible, it means no orders have been moved to that carrier after clicking Ship Selected Orders.