To install additional components, you can run the installer again. The installer detects the newly-installed components and uses them to satisfy the dependencies of other components. Installed product components are disabled at the Component Selection page.
When adding product components to a host where a Communications Suite installation has already been done, be sure to use the correct paths and passwords if the new product component will use a product component that is already installed and configured. If you do not remember what these are, refer to the Installation Summary for the original installation before adding any product components to the host.