Remove online presence information
If you are using Microsoft Lync in your organisation then user online status is shows on various SharePoint pages, and various actions are available. If you need to disable this feature then it can be done using Central Administration in a few simple steps:
1. Log in to Central Administration
2. Under Application Management select Manage Web Applications
3. Select the appropriate web application and click General Settings
4. Under Person Name Actions and Presence Settings change the Enable additional actions and Online Status for members to No
5. Click OK