[Leo_The_Lip]

Yes, its hard to do this, even if you've done it before. It is described well in the manual.

First you need to go to the league(s) that you want to expand. Then find the teams screen, the one that shows who owns each team. Then you add two teams to one division and pick the major league club that will own it.

Lots more detail in the manual, but it does work.