[EricH]

Originally Posted by WeRrobots

Can we use other alliances balls? What about entering another bot's perimeter for an assist, if it is on our alliance?

Start by reading the Manual, please. If you had read G11, you would have discovered just how bad the penalty for using your opponents' ball is. (It's NOT pretty.)

For the other one, there is no rule specifically against it. However, you only get 20" outside your own perimeter to work with, per R3-B.