Enter one TWS connection entry for each instance of TWS you want to connect to.  To enter a new connection entry click New.  To edit an existing entry, click "Edit".  Both will bring up the Edit TWS Connection Settings dialog:

Hostname: Enter the hostname to connect to.  This is either the name of the PC, or the IP address.  Leave blank (empty string) for the local PC.

Port: Enter the TCP/IP port to connect to TWS on.  The TWS default is 7496.  If you are running multiple instances of TWS on the same machine make sure they are listening on different ports.

Client ID: Enter the client ID to use when connecting to TWS.  Make sure to choose a unique ID (do not use a client ID used by another TWS API application).

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