For accounts that have more than one user, the account owner has the option to assign orders to specific users.
You can do this on the ORDERS page by clicking the More button at the top and selecting Assign.
Then each user can filter unshipped orders to display all orders or just the orders for the specific user who is logged in. By default, the ORDERS page will show All Orders.
NOTE: Accounts with only one user will not see these options.
How to: Create a shipping rule to automatically assign orders to a user
What tools are available to accounts with multiple users?
How to: Sort orders on the ORDERS page
How do I view which pre-shipment orders have been assigned to me?
How do I view which orders I'm processing on the Ready to Ship page?
How do I view which orders I processed on the Shipment History page?