Add More Editable Fields

I wasn’t quite sure how to word the title… but I’m creating a wordpress site for a fantasy football league my friends and I have each year. I want to create a “profile” page for each team where they can post any updates to their roster or their trading block, or make blockbuster trade announcements and the like.

Generally most of these things can be done just by posting a blog post with any of their updates… but I wanted to have a sidebar that included a spot for their roster and their trading block.

Is there any way to add these things to the WP Admin area where they could update it themselves? Or would I just have to keep it up to date manually by coding each persons page?

Any help is appreciated. Thanks!