If you are not performing frequently or you can't seem to update this page when needed, don't use a "performing schedule" page.
Note: Another technique is to set-up a performing schedule page for a particular performance (which is visible in your navigation), then shortly after the performance, take the page out of the navigation (don't delete the page -- you can remove this page from the navigation in your Blogger.com control panel without deleting it) until your next performance.
Then, update the page when you have another upcoming performance and make it visible in the navigation again. Pretty cool, huh?
What you DON'T want to do is leave a months old performance visible on your Performing Schedule page (which I see all the time -- doesn't impress professional talent people at all).