You can make an organization available for use on a project by assigning it to the project.

Fastpath: Project Setup > Organisations Setup

1. Confirm that the correct business unit is selected in the Current Business Is field, and that the correct project is selected in the Current Project Is field.
2. Select Project Setup > Organisations Setup.
3. In the System Organisations pane (on the right), select the check box next to the organization you want to assign to the project and click .

The organization is now available to the project and appears in the Project Organisations pane on the left.