Question for cash game backing

[Toronto86er]

Sorry if I'm posting this in the wrong place; couldn't find a proper forum section.

I was just wondering what the standard is for cash game backing.

I've got a friend who wants to back me for cash games, but I'm not sure exactly what the specifics should be. I know with tournaments it's generally 50/50 with winnings, and stackeback is either agreed upon or not. Not sure what the deal is for rings is though.

What is the general staking/backing deal with cash games?