Since the router is not used at competition, you can really do whatever you want to it at home.
The Bridge on the robot gets completely reset at competition (and won't work with the router wirelessly there in any case), and the Classmate resets it's network connection everytime we start the Driver Station too, so as far as FIRST is concerned that portion of the Getting Started Manual is just a home aid.
The main use for setting it up at home is to make sure the Bridge works correctly over wireless, before you get to competition and find it's broken...