You can create and manage templates through the Yesware account on app.yesware.com. In Gmail or Outlook, select Yesware > My Account > Templates. From there, you can create, edit and manage personal templates. If you are a Team Leader, you can create, edit and manage team templates and categories.
You can also edit a template from the Template Library in Gmail or Outlook. To do so, select "Template" from the Yesware dashboard in Gmail or Yesware section of the Outlook ribbon.