You can add a personal note or greeting to your Skype for Business (Lync) main window so that people can see what you’re up to. Change the note as often as you like.
To add or change a personal note:
In the Skype for Business (Lync) main window, click the note box above your name, and then type a note, such as “Working from home” or “Working on a deadline, please IM instead of stopping by.”
Tip: Outlook users, if you turn on Automatic Replies, your out-of-office message displays in the Skype for Business (Lync) note box until you turn off Automatic Replies (by clicking File tab > Automatic Replies in Outlook).