Tera Term Function Keys

Does anyone know if it's possible to set a function key such as F6 to replace having to type the sequence Ctrl + Shift + 6 in Tera Term? I've been trying to edit the KEYBOARD.CNF file with no luck. When I use the keycode.exe program, Ctrl + Shift + 6 shows up as keycode 1543 but I'm not sure where or how it needs to be entered.

I'll just use Auto Hotkey to solve the issue above.