Sometimes I want to create more realistic wars with the custom distribution option but I don't want to spend more time making the custom distribution than playing the game so I can't create some battles. I want to know how to distribute territories faster than picking one territory and changing its properties at a time. For example, I want to distribute half the territories to one player and half to the other on an approximately 200-territory map. It would take too long to distribute them all one by one.
So do I have to distribute the territories one by one or is there a faster way?

You can set a number of territories that each player will receive, either at random or through picking. Obviously, this won't be the exact territories you might want, so the only way is still through custom scenario.

I want to know how to distribute territories faster in the custom distibution thing not anything outside of it.

See http://wiki.warlight.net/index.php/Custom_scenario

According to the Warlight Wiki article, I still have to do it one by one. At least it told me how to do the TAB and the team letter things faster.