Creating a New Project Web App Instance for Project Server 2010
Creating a New PWA Instance
1. Access the Sharepoint 2010 Admin Console and select Manage Service Applications
2. Click on Project Server Service Application
3. Click on Create Project Web Access Site
4. Input the properties of the new project Web App site by selection the Web Application to use and the name of the Project Server databases to use, and press OK to provision the new site.