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

* custom view
  #+BEGIN: columnview :maxlevel 3 :id f96484a3-c520-4abf-979e-e8ff2c047c54
  #+TBLFM: $2 = ceil($3 / 8)
  #+END:

* project
*** Total of Effort
    :PROPERTIES:
    :ID:       f96484a3-c520-4abf-979e-e8ff2c047c54
    :END:
***** feature
******* TODO task
        :PROPERTIES:
        :Effort:   7
        :END: