First it was not obvious how this works. I thought I could go to a folder and create a new article from a template. After some time I found the slightly hidden button in the bottom of a template to create a article. Would be nice to create a new article from a template in the right location using the normal process.
Second there is a bug. Go to a template and create a article. I then just edited the page name and location and clicked save draft. This gives a browser error page, HTTP error 422.
Last thing. I read in the documentation that templates are per user. For us we need them to be global. The point is to have everyone use the same template.