Hi @Tuoedir6, welcome to the forum 
Yes, although depending on the software you’re running it will either be quite simple or a bit complicated to set up. There’s a comment about it here.
Not the normal version, no. There’s some information here about a few different ways you can receive an extra stream. There’s also this custom QGroundControl version, but note that because it’s a fork it’s not supported by the main QGroundControl developers, and there are no guarantees it will support all the features of or receive the same updates as the normal QGroundControl.
The normal QGroundControl can technically support 2 video streams if one of them presents itself via MAVLink as an infrared camera, which is a feature we’re hoping to make available via our Companion Beta software in the next few weeks.