Emoticons are graphic images that you can use to express emotions within an instant message conversation.
Add an emoticon to a message
In the conversation window, click .
Choose the emoticon that you want to use, and then press ENTER .
Important: We're sorry, but unlike other Mac applications, you cannot add custom emoticons or emoticons from other applications to Lync for Mac. For a list of more emoticons that you can use in Lync for Mac, see the article Keyboard shortcuts for emoticons.
Notes: If you don't want to use emoticons, you can turn them off.
On the Lync menu, click Preferences > Appearance . Under Emoticons, clear the Show emoticons in instant messages check box.