The Install Action is responsible for installing the product on and making the desired changes to the target system, in the sequence displayed in the Product Tree. A progress bar can display during the installation process and be customized to display a graphic(s)/billboard(s) via the Progress Renderer property.
The developer has the ability to determine whether the end user has the ability to cancel out of the installation before it has completed by setting the Cancelable property — If set to "False", then the Cancel button on the panel is grayed out and inoperable.
This action is automatically included in the Wizard Root Installer Tree of Simple, Typical, and Single-installer Suite installation projects.