New to the Lync 2013 client is the capability to use tabbed conversations, which is enabled by default. After starting one IM, simply double-click another contact to start a separate conversation and the windows will be automatically grouped together with tabs, as shown in Figure 25.3.
Tabbed windows apply only to IM or Persistent Chat conversations. When a user makes an audio call or joins a meeting, that conversation is opened in a separate window.
Users can adjust the order of the conversations by left-clicking on a conversation and dragging the tab up or down. Tabbed conversations ...