Navigate to the Project Web Application (PWA) site. In the Quick Launch navigation, click on Server Settings.
In the Workflow and Project Detail Pages section, click on Enterprise Project Types.
Create an Enterprise Project Type, by clicking on New Enterprise Project Type.
In the Add Enterprise Project Type page, specify a Name for the Enterprise Project Type (for this example, Cost Restricted Proposal).
In the Site Workflow Association drop-down, select the Nintex Workflow (in this example, it will be the Basic Branching Workflow) to be associated with this Enterprise Project Type.
Fill in any other details in the remaining fields as required. Once completed, click the Save button.
The newly created Enterprise Project Type will be listed together with the Workflow Association. Now create a project based on the Enterprise Project Type "Cost Restricted Proposal" and the Basic Branching workflow will begin executing automatically.