I am new to SharePoint customization. I want to add a webpart to an existing page layout. I found this tutorial at msdn but I don't understand how to add the real webpart to the page:
https://msdn.microsoft.com/en-us/library/office/jj862341.aspx
My understanding says that I have to add the markup from the msdn article to the page layout. But this is only a zone where I can add the webpart.
How do I add the real webpart to the zone? I clicked around the Design-Manager a little bit but did not found anything where I can do this.