Instructions
Enter your tamer house and enter the DigiFarm PC on the left side of the room.
Select the "Digivolution Route" hexagon that appears in the computer's menu.
Select the "Salamon" from the list of available Digimon.
Select the white hexagon to bring up the options menu for the Digimon.
Choose the "Digivolve" option and select "OK" to confirm your choice. Your Salamon will now evolve into Gatomon.