Calendar Groupings

[Truth66]

My question is whether or not Calendars can be created into specific groupings like the Forums.

Currently when a person clicks onto Calendar Picker, up comes a complete listing of the calendars that were created in the Calendar Manager. These calendars are listed in the display order that is set up in the Calendar Manager.

For example purposes, let’s say a site developer has 100 calendars created in the Calendar Manager and wants to put them into 4 groups.
Can it be set up so that the user clicks onto Calendar Picker and up comes a menu listing the different calendar groups such as:
Calendar Group A (or whatever title I would choose)
Calendar Group B (or whatever title I would choose)
Calendar Group C (or whatever title I would choose)
Calendar Group D (or whatever title I would choose)
Etc.?

Therefore:
When the user clicks onto Calendar Group A, up comes a listing of the first 25 or so calendars.
When the user clicks onto Calendar Group B, up comes the next 25 or so calendars. Etc.

Thanks Again