When using a CFD-related software tool in a team environment, it is advisable to have more experienced users designing models and less experienced users running simulations. The user-defined template, or UDT, is a feature that allows you to create a baseline case that can be easily modified using a simplified Ansys Polydata interface. This capability provides access to preselected parameters only, and saves time when you need to run a series of similar simulations that vary by only a few parameters.