Pre-requisites:
Permission as mentioned below, on the project template in which users are to be added:
You, your organisation, or a user group where you are a member must be assigned 'Admin' permission.
Below are the steps to add users to a project template:
1. In the 'Projects' area, navigate to the project template where you need to add users.
2. Right-click on the required project template, select 'Roles & Users', then select 'Add User'.
Alternately, mouse over the project template thumbnail in the thumb view and click the 
icon. A layered page opens. Click 'Add Users'.
3. Follow the required steps to add users to a project (steps 2 to 7).
Next Collection: Define Configurable Attributes (in a Project Template)