QWFIX RTAnalyzer can be used to control the connection of individual FIX sessions in the running process.
In the "Profile" panel, right click on an engine node, then choose "Manage Sessions".

The session control dialog will show up. User can use the buttons to turn the connection on or off.
Note: Once the connection is turned off manually, it will stay off forever. The scheduler associated with the session is also turned off so that the session will never be automatically turned on. The scheduler will resume control once the session connection is turned back on.
