[Sun Tzu]

This may be a stupid question, but please humor me here.

I've got a solo OOTP 9 league that I'm pretty immersed in. I'd like to either A.) add seats to the current ballpark or B.) build a new park. I know how this works in FOF with the vote and all that. How does it work in OOTP? Is there a proposal process? I'm hoping it's not just a "create it in the ballpark section and assign it to your team dummy" fix. Any help is appreciated. Thanks in advance.