Project Security
Once the new project is saved, the Manage Security button becomes available in the top right corner of the page. Click the Manage Security button to reveal the following popup:
User Group Security Tab
User groups given access to a project automatically have access to all aspects of the project (unless set to read only). To edit the user groups with access to the project, click the Edit button.
The bottom portion of the popup will display any users with supplemental security overriding the user group security.