How to remove 'Edit' Action when the status of a development goal is 'Completed'

Summary

How to remove 'Edit' Action when the status of a development goal is 'Completed'

Content

Hi,

we would like to remove the possibility to Edit (see the screenshot 'Remove_Edit_Action.PNG' that I attached) a development goal (and to remove the possibility to Add new Measurements and/or Tasks related to the same development goal) when the status of the task is 'Completed'. Our aim is to prevent the possibility to Edit the development goal to all users (then both Workers, and Managers and HR Specialists) when the development goal status is 'Completed'.
Hoping someone has some suggestions.