Good little movie from Apple's Quick Tour podcasts which demonstrates some of shared calendar and meeting functions in 10.5 iCal when combined with 10.5 Server's iCal service...
See also the associated Directory podcast which gives a good overview of using the shared users, groups, locations and resources available for iCal meetings...
View Quick Tour Directory Application
You can download from Apple's site by right-clicking (or control-click) and 'Save as Quicktime Movie'.
