Can you combine 2 of 3 brain wallet addresses to form a multi-address? Is there a way to use 2 of 3 brain wallet addresses to create a multi-signature address? How can this be done? I was hoping to do this with warp wallet if that is possible or not. 

I'm assuming it would be like this:


3 people create their own brain wallet address via warp wallet tool.
These 3 people put their address through a multi-sig tool? 
The tool spits out a 4th address that is the funding address?


FYI, I never did a multi-signature send before so I'm just assuming that's how it would work. If not, please correct my view of how it actually works if you were to use a brain wallet.
I'm not familiar with warp wallet, but this can be done via Armory. First generate the brainwallet addresses. Second import the private keys into 3 different wallets in Armory. Third, create a lockbox using those 3 addresses. Voila, you have a multisig address that can be sent to.