Is there a way to have a project owner have access to edit the tasks, but not the project level data (i.e., Start Date, Schedule Mode, etc.) without having to assign each task to the project owner?
In order to manage all of the tasks of the project, a user would need to have manage rights on the project, which automatically allows to edit project setting or overview.
We don’t have a mechanism to support such functionality at the moment. Users with Work licenses who are granted manage permission on the project through a group or team will be able to manage ALL tasks of the project without being able to fully modify project level data.