This operation can be performed only by users assigned the Admin role.
To halt trading on a specific market and cancel all limit orders open on it so far, proceed as follows:
Locate the market in the list. You can use quick search to filter markets by ticker symbol (such as
Position your mouse pointer over the market, and then click the gear icon.
In the dialog box that is invoked, set Status to Halted.
Click Proceed to apply the changes.