The Market Order Search control allows you to search historic Market Orders. To access the control you can click the Market Order Search icon 
.
A control will be added to your workspace. The columns are the same as in the Market Orders View control
You can search by:
Date From and Date To: The start and end date for the orders you are looking for.
Side The Side for the orders.
Symbol: The symbol for the orderbook.
Trader: The username for the trader
Broker: The broker for the order.
Exchange: The name of the exchange for the order