Standard reports included in Lync Server 2013 cover information on system usage, peer-to-peer sessions, conferencing sessions, and call quality. We will talk about some of them in the following paragraphs. However, in addition to the previously mentioned reports, we can also create custom reports based on the reporting data we are already gathering. Customizing reports is an important step to obtain information that fits better with our needs. We will see how to create a custom report that contains information on the time when users joined and left a conference.