Browse to the folder that contains the template to be edited by uploading a file.
Click the icon to upload a new revision for this template.
Alternatively, clicking the name of the template and then clicking the "General" tab will bring up a list of options for that template (see Figure 1). Click the "Upload" link to upload a revision for this template.
Choose a local file from which to upload the new version of the template (see Figure 2). Clicking "Upload" will upload the new version and clicking "Cancel" will go back to the previous page.
Clicking the "Upload" button adds a new revision to the template, filling in the template body with the contents of the uploaded file.