[Q] Windows Mobile 6.5/6.1 subsequent appointments hour autoupdate

Hi,

lets suppose I have a following situation:
- Windows Mobile 6.5/6.1
- stock Calendar application
- Agenda view inside Calendar
- an appointment selected
I want to add a new appointment after the selected appointment. When I add a new appointment, I want the date / time of the new appointment to be automatically set. Set - i.e. the selected appointment ends at 15:15. I want the next appointment I create to automatically update the Start hour (to lets say to 15.30).
Is this doable on Windows Mobile 6.1/6.5 Professional?
I ask because I've had HTC SPV e650 in the past and I've recently switched to Touch Pro 1.
And, apparently, TP1 is lacking the above functionality. I've tested 9 different ROMs and in only one the feature worked but I didn't like the ROM layout etc.
I'll be really glad for an answer to my question as I invested much time in finding an answer already and haven't found one.

Regards.