Raspicam and USBcam same time?


How can i get an USB Cam and A raspicam v 1.3 at the same time in octoprint?

I tried this "http://thomas-messmer.com/index.php/14-free-knowledge/howtos/79-setting-up-octoprint-for-multiple-printers" but it doesn't work! I doesn't get a second port address! and i don't want to setup a second printer!

I use, Octopi 1.3.8 on a raspberry pi 3, Marlin 1.1.8 on a arduino mega/ ramps 1.4, Hypercube Evolution build volume 400x400x400