if i had to go through this i would tried my very best to own the room; your in-charge of that situation, they are waiting for you, your standing up higher than everyone else they all will be in awe when you start to speak this is your moment to shine. At a training class i went to once the teacher asked for someone to stand-up and do a quick presentation on the subject in front of us, no one put there hand up and i thought this was getting going to get embarrassing so i did it. f\*ck the lot of them! i had the power in those 10 minutes and didn't stutter one bit