I think this is task for Attached Events,
as I represent this:
- create 2 attached event templates with 2 macros;
- macro will switch extra message visibility;
- special message scheduler is defined as z_start_date and z_end_date; (or start and length)
- once date is changed event will attach with fire time at specified date;
- event and macro could be created for cnote without any hard customization, directly from dbload (userload) or Source code in browser;
Regards,
cdtj