More searching and still nothing. I may be asking this wrong. The feature term could be called a "Reminder". Each event would have option to have a "reminder" set for days, hours; at the given time a reminder email would be sent to either a category email list or subscriber list. I see this feature available on may sites such as Yahoo, eBay, etc..... Not finding this in the top 5 or 6 popular Joomla calendars I tried a commerical one that advertised this feature .... Thyme ... I went through the exhausing effort of installing their 30 day trial .... and found this product is misleading ... it does not have this feature.
I sure could use some help here buds.