You couldn’t until today. Now you can grab the Lync Server 2010 Web Scheduler.
Here is what the Lync Web Scheduler can do:
Here are the Lync web scheduler deltas vs. the Conferencing Add-In for Microsoft Outlook:
Grab it here.
Was wondering if you have seen the feature Livemeeting has to "Publish" a online scheduled event. I cannot see how LYNC 2010 does this. Please let me know if you have come across this. You can see an example below:www.livemeeting.com/.../Registration.aspx