Download the poster: here
Source:DrRez Blog and Microsoft Download Center
Microsoft Lync Documents now available for download. Version Jan2011
For more info and other related documents visit TechNet.
Source: Microsoft Download Center

But Administrators can provide users with another option for setting their presence: Appear Offline. When a user selects this option, he or she appears to be offline. In fact, all of the user's contacts see a presence icon indicating the user is offline. For the users to have the option of "Appear Offline" you must create a new registry key and registry value on the computer running Microsoft Lync 2010. For this option that I'm showing is per user or machine setting only, not a Global Setting. Caution: Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on the computer. Enable User to Appear Offline:
Registry Setting Sample

You know have the "Appear Offline" option on Lync 2010.
For question you can email: mikhail@mimanu.com
To define custom presence states in Microsoft Lync 2010, you will create an XML custom presence configuration file, and then specify its location with the CustomStateURL registry key.



Lync -- a combination of “link” and “sync” -- fits these criteria and adds a creative element to the product that we can work within our branding, messaging, and in-product use (i.e. “make a Lync call”). Lync is about connecting people in new ways, anytime, anywhere.
Other info and news: Lync