Only the account admins and project admin can change the project owner.
To assign a project owner, first click on the relevant project. Once in the project cover page’s Overview tab, click the Project Team tab.
When you have selected the “Project Team” tab, hover over the project admin you want to assign the project ownership to. A checkbox saying “Project owner” will appear to the right of the Project Admin’s name. Click on the “Project owner” checkbox.
The project now has an owner.
In the tasks tab, all existing tasks will be assigned to the Project owner by default, and will appear in Italics and gray font color. You can always reassign tasks to a different user. When you manually assign the person responsible, the name of the person will appear in normal blue-colored font (not italics).