No Live view for Nikon 5100?

I bougth a Nikon 5100, according to the list I should have live view with this camera on I stop motion.
Is the information wrong or do I have to change anything?
I´m not sure, where I can switch into ptp-mode.
Would be great to get an answer!

Currently iStopMotion isn’t able to show the live view of any DSLR camera. However, you should be able to capture a preview to check if everything is ok, then insert this picture into the movie and capture the next preview.