Help! replacing one way switch with double gang two way

[browser]

Hi
I am wanting to run two sets of lights off one switch.
I currently have a sinngle light in and am going to move that switch and replace it with a double gang two way.
I want to install an additional wall light that is switched independantly of the existing light.
The current switch is fed directly from the consumer box (both are in the garage), so I will run a live directly to the new double gang two way.
Do i connect live to the common terminal, neutral to the one marked one way, and then just link the switches?

A diagram would be appreciated

 

[kevplumb]

try here

 

[browser]

Thanks, I think I can suss it from that diagram