Lock due date at assignee level.

I want assignees to be able to toggle fixed due dates for each task.

Sample image

Milestones are similar, but they are a little simpler.

Example of usage: In My Tasks, my friend’s birthday is a milestone. I want to fix the due date of the task to reserve a restaurant for the birthday party two weeks in advance so that it doesn’t get changed accidentally.


This is not a solution.

https://help.asana.com/s/article/release-notes?language=en_US#april

(Enterprise) Edit restriction on assignee and due date fields: Restrict who can modify the assignee and due date on tasks through project-level permissions.

This may well provide a resolution.