Hy, thanks for your answer,
I'm working here in a company, that among others offers DVD and Blu-ray authoring, and I have to admit that some of our programms we use here are a bit out of date, but do their work for our jobs. I got hired here just a year ago and still have to get used to these programs, that my predecessors were using.
From the install folder, I can see that DVD it Pro HD was installed 2011, Version 6.4.2. I found a pdf document from my predecessors and it says, they bought a "Sonic BD Power Station". The pdf also contains a dongle number and a very long activation code, together with a system ID and Sonic Online Log in Data, so I think it must be a legal version :-)
I also work with DVD Studio Pro 4 (yes, also not "current" authoring software), and with that programm, I can create so called Stories, which are just links to chapters, that jump back to the menu, if the chapter ends. So I just wanted to know, if DVD it Pro HD has a similar functionality, although I know it is Blu-ray authoring not DVD authoring.
Well, as you wrote, this would be my workaround, too. Unfortunately I have to put in some work to render all the different chapters in several independent movie files... But if that is the final solution, I will (must) live with that.
Thank for your help, Maik