Dear Experts,

How do I make it so that column-view shows the duration of a scheduled task?
I now that if I do something like

* my top node
    :PROPERTIES:
    :COLUMNS: %40ITEM %%10SCHEDULED
    :END:

and then create a dynamic-block I can get a table to show the scheduled
time, but what do I do if I want the duration of a scheduled task?

Thanks,
-Emin