The Sims 4 doesn’t allow players to change the UI in its settings so adding more columns in CAS is not possible in the vanilla game. You can add various mods to help you with that.

Despite having been out for several years the CAS function in The Sims 4 is still severely lacking basic features. Thankfully modders have stepped in.

From utility and build mods to new ways to start a business, go to school, or vacation, and with a bit of the bad stuff in between, these are the best Sims 4 mods we’ve ever tested.

The Sims 4 is partnering with CurseForge to create a hub for 'safe, curated' mods and a mod manager.

Do note though, that the More Columns in CAS mod will only work with versions of The Sims 4 that are 1.58.63 or later. It’s also worth noting the following, which weerbesu makes clear.