1. On the Icon bar, click Project.
2. Select the Templates item from the left pane.
3. Right-click anywhere in the templates list in the right pane and choose Add Templates from the shortcut menu. The Add Templates dialog box opens.
4. Select the template you wish to add and click Open.
The new template is added to the list. Note that you'll need to add the template to the project in order to attach it to any of the Help targets.
Alternatively, you can select the Template property for any Help target and from the template selection drop-down, pick Add templates. By using this method, the template is added into the project and attached as the template for the current Help target.