dual 9V battery/Triple pole switch

[GRNDPNDR]

I'm just designing a simple op-amp circuit but I would like to have a way to turn it on or off, but I'm using 2x9V batteries for the dual power rails.

In simulation if I just turn off one side it unbalances the circuit and causes soem odd things to happen.

Are there any triple pole switches in multisim so I can cut power completely from the battery?

What could I use as an on/off switch that would trigger being on or off based on a 5V signal from USB. IE when USB is powered on, it will automaticlly allow power from the 2x9V batteries to the op-amps?

[Tom__Sedlack]

In Multisim, just use 3 SPST switches and set the key for toggle to the same key for all 3.  Then use the keyboard key you specified rather then clicking on the switch itself to toggle all 3 at once.