On Sat, 11 Dec 2021, at 5:55 AM, Samuel Banya wrote:
> However, one thing I would want to know is this:
> - Is it possible to automatically delete the '#' priority value of a task after a task has been marked as 'DONE', 'CANCELLED', etc?
> 
> Is this done via a hook function?

Probably!

The org documentation (https://orgmode.org/worg/doc.html) includes a list of all of the hooks it supports. If you search it you'll find `org-after-todo-state-change-hook`, which seems to be exactly what you need. Keep digging, and you'll find the `org-priority` function to set an item's priority.

Looks like all you'd need to do is write a hook function to check the new state, and then change the priority.

-- 
Peter