Typically, you should have a .cas file with input and output parameters defined. Alternatively, you can read a case file, initialize a parametric study, and then add any input and/or output parameters as needed.

All post-processing images, plots and other quantities must already be included in the design points and their reports already set up prior to updating the "Base DP" design point.

If you want to use automatic designs of experiments (DOEs) creation, an optiSLang installation is required, though you do not necessarily need a license.