Moving usbs

[Tezwalker]

 Hi  I am new to genos had it 1week  changed from tyros 5   2 question I have at the moment I need confirmation  with 

  When I  set up pedals  volume and sustain and save is there any way to save with out having to keep freeze button on before I select a registration

  How can I stop the usbs changeing numbers  the one under the keyboard usb1 the one at the back I have the monitor adapter in in the usb on top I have a 4way switched hub  with 4 usb in but if I switch one or two off the usb 1 changes  say to usb2 The problem is when I go to find a registration in usb1 it is not there any work round thanks

Thanks Terry