Before you say this is patch it really isn't just did it 5 minutes ago.
Here are the Steps:
1)Invite your friend to a player match
2)Switch it to private match and change to whatever gamemode you want (Im doing S&D)
3)Now switch to combat training and QUICKLY back out
4)Goto private match and set the rules the same
5)When you go to health and lives options and switch to miniscule and unlimited lives dont press B
6)have your friend invite you back
7)Your friend should already be in CT
8)Now that you are with him you should have a square saying Live: Unlimied Health Miniscule etc.
90Have your friend back out
10)Now press B and you should be the host you can set the number of friends and enemies etc.

killstreaks cannot be modded just set them to gunship chopper gunner and b52


Please do not say this is patch the old way is where your friend switchs from player to combat after doing the above steps and backs out and then you are the host of the game this way is not patch

New Update: I was banned for posting this because I made the mistake of having my GT appear by my name. I can imagine that this will probably be patched soon because treyarch saw this. All I ask is because I'm banned until tomorrow for trying to help out the community is that if you are hosting a lobby based off of this method please metion I showed you this idea. I'm not asking for rep or anything like that I just want the props considering I was the first to share this idea.
Thank you