#+COLUMNS: %50ITEM(Task) %Days %5Effort({Hours}){+}
#+STARTUP: odd showall

* custom view
  #+BEGIN: columnview :maxlevel 3 :id 52d4f620-6f41-414f-89d8-cd3e8e19a2f0
  | Task | Days | {Hours} |
  |------+------+---------|
  |      |      |         |
  |      |      |         |
  #+TBLFM: $2 = ceil($3 / 8)
  #+END:

* project
*** Total of Effort
    :PROPERTIES:
    :ID:       52d4f620-6f41-414f-89d8-cd3e8e19a2f0
    :END:
***** feature
******* TODO task
        :PROPERTIES:
        :Effort:   7
        :END: