How can I limit the access to certain elements like due dates or changing the project milestones for other people?
Or how can I add an approval before anybody tries to change the deadline of a task?
Editing and viewing due date is only allowed to people who have schedule issue permissions. So you can go to your permission scheme and see which user roles/groups have that permissions. You can then add/remove people from that group you want.
And similarly you can explore other project related permissions over there as well.
shortcut: g+g --> Permission Schemes
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