Kerio settings to share internet connection

I have 2 PCs; PC#1 is directly connected to the internet, PC#2 is connected
to PC#1 through a wireless ad-hoc connection.

PC#2 can only access the internet when Kerio is disabled on PC#1.

I've enabled Gateway Mode, but that hasn't helped. What options do I need to
put into Kerio to allow PC#2 to access the internet?