If you do not have Microsoft® Lync™ 2010 communications software installed, you can use Microsoft® Lync™ 2010 Attendee, which is a conferencing client that allows you to participate in Lync 2010 online meetings.
Lync 2010 Attendee provides communication tools such as instant messaging (IM), audio, video, as well as collaboration tools such as program sharing, screen sharing, attachments, whiteboard, polling, and slide presentation.
This topic presents a few tasks that you’ll have to do to start using Attendee.
You can obtain the Attendee client as follows:
You can adjust various settings in preparation for using Attendee. You can also adjust options when you’re in the meeting.
The options General, Personal, Ringtones and Sounds, Audio Device, and Video Device are the options that you can click from the Options dialog box. You can then either review them to make sure that they are applicable to what you want to do, or change them.

Note You could join Lync meetings with earlier versions of Communicator, but we recommend that you use Lync 2010 for the best experience. With Lync 2010, you’ll get the full in-meeting features that are set by using Attendee.
As mentioned, the support team in your organization may have already installed and set up Attendee for you. If they did, you will see Microsoft Lync 2010 Attendee in the Windows Start menu, where you can open it and view and change options, if required.
When Attendee is installed, you can join a meeting as a guest or an authenticated user.
You can use Attendee to join a Lync online meeting as a guest or an authenticated user by following these steps.
For general information about joining meetings, see Join from a computer without Lync 2010 installed.
Depending on how the organizer has set up the meeting, you’ll be able to either join the meeting immediately or wait in the lobby until a meeting presenter admits you. You can be admitted only by a presenter or an organizer.
As soon as you’re admitted to a meeting by a presenter or an organizer, you’ll see the meeting window. You can then use IM, audio, video and view what’s being shared or presented.
If you’ve joined a meeting as a presenter, you can share. When you are in a meeting as an attendee, you don’t have the option to share. To start to use one of the sharing options, an organizer or presenter must make you a presenter.
For information about the tasks that you can perform once you’re in sharing mode, see Work Smart: Use Lync 2010 Attendee.