As live production roles

We got told our production roles for the as live project today, i was given Research/Camera Operator for the VT's/VT editing for before the shoot day, with my shoot role being Vision Mixer. I'm not too worried about shooting and editing the VT's but mixing the vision is a bit daunting! Hopefully it's a lot easier than i imagine and we wont just end up watching a programme full of shots of the back of peoples heads because ive pressed the wrong button!