If you need to edit the Template Content when creating a Quote, this feature will allow you to make changes to the Cover Page, Cover Letter, and Appended Content. When making the necessary changes you'll be given the option (barring the required permission level) to "Save to Template" which will apply the changes to all new Quotes moving forward:
Edit Cover Page:
Edit Cover Letter
Edit Appended Content
If there are subsequent changes that need to be applied to the Template Content you can do so when Editing the Quote by clicking the checkbox for the respective Quote Content section.
Changes made when Editing the Quote cannot be saved to the Template. If you'd like to make permanent changes to the content, simply go to Templates and edit the appropriate Template as required.