How can I open and edit the templates?
[iPad/iPhone] Simply choose a template you like and tap on it. A preview will appear. Then tap on the "Open in..." button in the top right corner of the app and select the appropriate editing app.
[Mac] Select a template you like and click on it. A preview will appear. Click on the "Open in..." button in the top right corner and choose a location, where you would like to save the template