I have an Emacs Org file with list of tasks with a set of properties each one. Say I have three properties called ESTIMATED, SPENT and REMAINING, which account for the number of hours that I estimated the task will take to be done (ESTIMATED), the number of hours I already worked on it (SPENT) and the hours left from the original estimate (REMAINING). Obviously (and assuming we do not re-estimate the time it will take), for each task REMAINING = ESTIMATED - SPENT
I use a lot Column view to update status, work spent and so on. Is it possible to set up the property REMAINING so that when I change in Column View the value of the property SPENT, the property REMAINING gets automatically recalculated?