UIExtension is where we can find several premade user interfaces to guide users through the installation. Here are five premade user interfaces: WixUI_Advanced, WixUI_FeatureTree, WixUI_InstallDir, WixUI_Mondo, and WixUI_Minimal. Each has some unique features. For example, WixUI_InstallDir lets you change the target install directory and WixUI_Mondo gives users the option to install a typical, custom, or complete setup. WixUI_Minimal is the easiest to get started with, since it only has one dialog. In this recipe, we'll add it to our setup project to give you a feel of how it works.