All projects that are currently being implemented in the company are displayed in the project overview.
You can find these under Organization – Projects – Overview.
Above the list of projects you will find the intelligent filters where you can filter by projects, project phases or project managers, etc.
The different color markings of the individual project phases (how you create individual project phases or represent them in color will help you here explained) gives you a quick overview of the current project status.
As already mentioned, you can add an existing project by clicking on 
copy. Fill the window that appears on your screen and finally click “Save”.