Expanding a league

Hi everyone

I have now played for five seasons with Hearts in the Scottish Premier League
Before I start my sixth season, I would like to increase the number of participaters. Instead of 12, I would like to play with 16 teams...
Is it possible to do this in an excisting savegame? If it's possible, how can I do this???

Afraid not mate, the only way you could be able to edit it is by installing the editor and then adding a new league, you wont be able to edit the existing league either I dont think