Race Tech Dash 2 and fuel switch over

[GTRS]

Can anyone explain how to configure/wire the Dash2 so that it automatically switches between the fuel tanks so that I can do away with the manual fuel change over switch?

[GTRS]

It's only the Dash 2 Pro that has Low Side Drivers which can be used to control external components based on a programmable equation.

I have the standard Dash 2 :-(