The Project Settings is where you can control the ownership of your project, archive or delete the project, and control a few other settings.
You can access the project settings from your Projects Dashboard and from within the Project. When on your Dashboard, hover over the project and click on the gear icon. When inside the project, click on the gear icon next to the Project name.
You can only access the project settings if you are an admin or leader on the project.
Within the Project Settings you can see and control the following in Main tab:
Project Name
Project Address
Project Reference
Project Leader
Owner company
you can also Archive or Delete the project in the tab.
You can change below in Custom tab:
Holiday calendar (public holidays)
Custom Fields (read this article about custom fields.)
And you can add Images to your project in Images tab:
Cover photo
Project logo