Set Template Dialog
The Set Template dialog can be accessed from the main panel and also from the Document Options pages.
This dialog lets you manage the template attached to the current document.

Click Edit to edit the template associated with the current model. If a template is already associated, it will be opened from its existing location on disk. If no template has been associated yet, you'll be prompted to choose a location to save one first. The template opens in a separate Rhino instance — be patient while it launches. Remember to save your changes and close the template file when you're done editing, then reload it (see Reload below) so the current document picks up your changes.
Click Reload to reload the currently associated template file into the current DOCOpack document.
Click Switch to bind a different, existing template file to the current document, replacing whichever template is currently associated (if any).
Click Clear to disassociate the current template from the document. If the template hasn't been saved to a file yet, you'll first be prompted to save it before it's detached.