The best thing about Test Studio is its record and playback capability. When using it you don't have to think about a "Manager" object. It's only when you absolutely have to work in code that a Telerik Manager object does enter into the picture. Even then if you're just using a coded step
in a Test Studio test script, it's all handled for you. While there is a Manager object under the covers, it's already initialized for you and our API usually uses Manager.Current under the cover so that you're not having to pass in the object to our various API functions.
If you can give me a more real world concrete example I can better advise you on what's needed to use it with Test Studio.