Starting uplay and origin titles on Steam
You can create a single launcher in Steam that includes both Uplay and Origin titles, allowing them to work together seamlessly.
You won't be able to proceed with this request. The games need access from Origin or Uplay.
You can include those games in your Steam library, but you’ll have to sign in to Uplay or Origin before launching them.
This manual allows you to run a single game at a time.