How do I use a custom scenario for PBEM

[DMOC]

Hi,

How do I make a custom scenario and then have a PBEM game? I want to play a game with my brother so I am hoping to create a map (via single player) and then modify it if necessary, then change it to PBEM later. However, how do I deal with the second human player?

EDIT: Never mind, silly me. I can just save it as a scenario and then the human can join later.