Updating the lync 2016 attendee
If your organization has both Skype for Business Server 2015 and Lync Server deployed, the default client experience will differ depending on server versions and UI settings.
When users launch Skype for Business for the first time, they will always see the Skype for Business user interface--even if you have selected the Lync user interface.
In addition to all the features of Lync, Skype for Business provides new features with simplified controls and familiar icons.
For detailed information about the new client experience, see Lync is now Skype for Business -- see what's new.
Pause on the three dots on the right side to see more options.