I would like to know if it is possible to add more teams to MLS?

I know someone made San Jose and they are visible in Manager Mode.

I tried to add another team but they do not now up in Manager Mode.
Is it a simple process or is some coding involved.

its easy mate use CM08 and edit the competition teams add your team and walla there you go !!

Thanks for your help. I realized I had to add teams in the 'Tournament section' also.