Hi Myles,
Thank you for using Syncfusion Products.
Currently your requested feature “Retrieving the appointments on demand” available in 2012 Volume 2 release and latest version, so we suggest you to upgrade our latest version (2012 Volume 3). Please refer the below link:
http://mvc.syncfusion.com/demos/ui/schedule/DataBinding/LoadOnDemand
Please let us know if you have any other concerns.
Regards,
Saravanan G