Is it possible to sum duration time for a list view in the Outlook
Calendar? I would like to list all appointments for one or more
categories and sum the total duration.

One solution is to export to Excel, but I was hoping go get the summed
duration directly in Outlook.

Is it easy to create a macro that sums up the duration for a specified
category and maybe a start and end date. I have good knowledge in VBA
and C#.

Regards // Johan