Character abilities grant massive boosts to your office. The more your characters level up, the stronger their character abilities will become. Be sure to upgrade your characters (and collect new characters) by buying Character Packs with Flair and picking up your free Small Pack once every six hours!
You can look at character abilities by tapping the HR Files icon or by entering the "Assign" view of your office and tapping any character or open slot:
You can see which of your floors are being affected by character abilities by entering the "Assign" section of your office and looking to the left of your assigned employees (right above the name of the floor) for small character icons. For example, in the picture below, we can see that Accounting is being affected by Bob Slydell, Dom, Stan, and Michael's character abilities:
Try all different sorts of combinations to get the most out of your character abilities!