There are 6 buttons across the top of the "console":
Settings
Sends you to the Settings card, where you can choose port, speed, data bits, parity, and stop bits.
Kermit Send...
Sends a file to the host using Kermit file transfer protocol. Make sure to set the file type to binary on the host, and to instruct the host to receive before clicking this button.
Kermit Receive...
Receives a file from the host using Kermit file transfer protocol. Make sure to instruct the host to send before clicking this button.