Sort by date in Calendar Ticklers

I've been slowly moving back to more serious use of Ecco after several 
years of peripheral use.  Currently using latest version of EccoPro with 
EccoExt on Windows 8.1.

In the Ticklers panel of my Calendar view, I have 3 groups -- 
Appointments, To-Dos and Start Dates.  The last group is another form of 
to-dos generated from the Start Date in a separate Notepad called Work 
Plan.

The question is -- how can I sort the group of Start Dates items by the 
date in the first column of the Calendar view?  It currently sorts with 
oldest date at the top and I'd like to be able to sort it with newest 
date at the top on occasions.  I'd like to be able to do that 
independently of the Appointments and To-Dos groups.

Hope I've explained that clearly.  All help appreciated.

Lindsay Graham
Canberra, Australia