Lync 2013 doesn't work on background

[saktuna]

İ need Help . İs there anyone can explain how i can do

 

[Laura Knotek]

I don't use Lync, but you might want to check out these pages from Microsoft.
Settings - Lync - Office.com
Getting started with Lync 2013 for Windows Phone - Lync - Office.com
FAQ for Lync 2013 for Windows Phone - Lync - Office.com