# Setup the Approaches

Once the study Setup is complete, an unlimited combination of approaches can be added to a study. A study approach is a specific set of steps taken to study the mathematical model of a design.

Each approach in HyperStudy serves a different purpose in the design study. The required steps for each approach may be unique. For example, you can use the DOE approach if you need to learn the main factors affecting your design, but you need to use the optimization approach if you want to find the design that achieves the design objectives while satisfying design requirements.