Guitar pedal help, overdrive?

I'm trying to get a "light overdrive" sound, like those alternative/indie rock bands. I have a Fender Mustang 1 amp and Fuse software... The Overdrive stomp box settings are Level, Gain, Mid, Low, and High.... I've been playing with the software all day, I can never seem to get the kind of sound I want out of the amp... I mostly play acoustic guitar and I find this guitar amp stuff to be so overwelming.