How can I use one remote controller for multiple cameras?

1. Please assign the camera to the different IR Address via below special IR key,
[*]+[＃]+[F1]: Assign Camera to IR Address 1
[*]+[＃]+[F2]: Assign Camera to IR Address 2
[*]+[＃]+[F3]: Assign Camera to IR Address 3
[*]+[＃]+[F4]: Assign Camera to IR Address 4
2. Press the corresponding IR Address to control the target Camera