A page must be published in order for it to be eligible to become a template.
In order to template a published site or landing page within Unstack, simply open the editor, then click the template icon at the top right of the editor.
Once you have clicked the template icon the Save as reusable template drawer will open prompting you to provide a name for this template. Once you enter a name and click Save this page as template the page will be converted into a template which will then be found within the in-app templates library under My Custom Templates.
How do I find the templates library?
Within the site page or landing page index, click the Grey Templates button to launch the library then click My Custom Templates to view all the templates that have been saved in your account.