Camera Stereoscopic options

SoundLufs

Please, could somebody fill me in about the Camera stereoscopic options, which appear under the Lens parameters tab?  The net is full of outdated info, I wonder is there any up to date tutorial?

I managed to render 360 spherical pic, which was looking ok in VR, but the main question for me is, do I still have to do 2 separate pics and stitch them in outside software for stereoscopic?

Thanks in advance.