To start, go to the Users table and select the user you want to see the full details for. At the top left of the page you'll see there are two new pieces of information:
Number of Open Orders
Number of Completed Orders
This will give you a summary of how many open and completed orders the appraiser has done.
Example - Open Orders
The easiest way to view these orders at this time is to head to the dashboard, and filter by assignee and hide the 'completed' orders.
Example - Completed Orders
Go to the dashboard, filter by assignee and select "completed".