CC targetting Raid marked targets

[bennyquest]

Is there a way to make your CC target raid marked targets? My question arises from we are losing one of our tanks on our core and secondary raiding teams and I have all but masterd multi boxing. The only thing is I am the main tank in our raids. So if I could Mark the targets for my other tank to tank and he picked them up is that possible? Or should i just get better at multiboxing? An instance that i would reall have an issue on is when the Elementium Terrors spawn in the second phase of deathwing. I could Pick up both then have my box/bot pick up the other after the initial threat....Just some opinions would be nice. Thanks everyone in advance.