It is a good practice to add an Extension Template Record to the top level page where you will be installing an extension's plugin. In this case, we recommend adding an Extension Template Record to the Calendar page.

Internet Link: Again, there is a helpful how-to and Flash movie that will take you through these steps if you aren't familiar with the process. http://webempoweredchurch.com/support/howtos/single/add_an_extension_template_record.