Never read or heard the TV web cam can be used by PC or Apples.
2. Yes. Been done too many times. I worry about your IT here. Why is there a doubt here?
3. More concern here. Are there new to PC and Apple folk here? That is, I don't see why there is doubt.

As to the second set of items.
1. No
2. Most likely
3. Task your IT to make it happen