Select the "Set" button to the right of the chessboard
or
On the inital Startup Screen, select "Set Options
Once on the "Options" card, click on either the "Packet" or "Modem" buttons depending upon the mode of operation you wish. Then fill in the required information. Note: The call sign field under the "Packet" option can be used to send whatever "Connect" info you wish to your TNC, including a "Via" for routing.