To enable the enhanced features, you must install Presence Services Enhanced snap-in and license file. For more information about installing Presence Services snap-in service and Presence Services Enhanced snap-in service, see “Loading the Presence Services snap-in” and “Installing a Presence Services snap-in” sections. For license file installation, you must activate and download the Presence Services Enhanced license file from Avaya PLDS and install the license file on System Manager WebLM.