The process for changing your router's channel / frequency depends if it is a NOW router or not.
If your router was supplied by NOW:
You will need to give us a call on 0800 GET NOW (0800 438 669) or email us at firstname.lastname@example.org
We can remotely configure your routers settings for you.
If you provided your own router:
Unfortunately we will not have access to your router, so we would be unable to complete this for you. (We would if we could!)
Changing channel / frequency is usually completed by accessing the router's administrative settings.
If you are unsure on how to do this, please consult your router's manual.