This functionality is only available in PRO version
more info about PRO version find This functionality has 2 parts. The first one prepares a frame with a PDF template. The second is the export to PDF self.
How to generate PDF template
Generate a PDF template is easy. What you need is to click on "GENERATE" button under PDF sub-tab.
As you can see on the previous picture, a PDF template is generated. You can add:
How to Export to PDF
After replacing by your project content, you can click on "EXPORT" button, where your selected PDF template will be exported to your local storage.