Select the "Chat with Sysop" command from the Chat menu to have a private chat with the BBS operator. If the operator is not available, you may receive a message back stating so.
You can use Chat anytime you are on-line, however chat is not possible during file transfers.
To send a message, type text into the window. All typed characters will appear in the lower half of the window. Click in the "Send" button to send the text. Your message will appear in the upper half of the message, just as the Sysop will see it. If the Sysop is available, anything typed by the Sysop will also appear in the upper half of the window.