Apple Pages '09 - Manual (Page 273)

Chapter 13 Designing Your Own Document Templates 273
To save the template in a different location in your home folder, go to Library/
Application Support/iWork/Pages/Templates/ and create a new folder. The folder name
is used as the template category in the Template Chooser.
4 Click Save.
To delete a custom template, in the Finder navigate to the folder in which you saved
the template, and drag the template to the Trash.