I have just posted on my web site a simple Absence Submission custom feature. It is a simple but powerful feature that allows organizations to provide their members a way to report absences on their website. It also provides notification emails when Absences are submitted, the ability to purge/clean up old outdated absence submissions, and a filterable grid view of all reported absences.

The source code is also available so check it out. Let me know if you have any questions.