How to change channels on Netgear router model R7960P

> How to change channels [...]

   You might find some relevant information in a widely neglected
resource:

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"Specify Basic WiFi Settings" or, say, "channel"?  Put much effort into
that Web search, did you?