Add Dialog
In Pre-install UI, Add Dialog is disabled because those dialogs are handled by the EXE
bootstrapper, not by the normal MSI dialog chain.
Built-In
These dialogs are predefined for the selected category and are not present in the default chain of dialogs.
Project
This type of dialogs are user defined in the current project and are not present in the default chain of dialogs.
Repository
Dialogs from the repository that are not present in the current chain of dialogs.