Easy question about playoffs

[Javier]

Hi everybody. I'm creating a custom league where the top 8 teams play a double round-robin playoff and the winner gets promoted. Thing is I don't know how to make the playoff a two-round mini league, because, unlike what happens when you create a cup-style playoff, the standard editor doesn't have the option to make a league playoff to have two rounds.

I guess it should be easy to solve this directly editing the xml with the Notepad, but I don't know nothing about doing that. So, help is greatly appreciated.

Thanks!