October Novel Prep Challenge

Check your protagonist's profile.
Were there any groups he was part of during his backstory or schooling? You never know the info may come in handy if you put in a flashback or two.
Also how his current business is run can give you ideas, the hierarchy of it, the bookkeeping if any, etc.
Are there any establishments, even like a mall, that he visits regularly, how they are run? These may make for the filler descriptions but they may enrich your story.
Good luck.