Please note that this only works for Business Plan users.
Assigning Staff
Go to the order detail page, and locate the staff section.
Choose the staff member to assign to the order.
Notice that the staff badge is now shown in the order detail page.
Filter based on Staff
Go to the filter section on top (icon with three bars)
Click on Staff
Scroll down to view the filtered orders.
The staff member will now see only their assigned orders.