Question on PB's pump sizing

[txborn]

Carl, I will have easy access to the pump. If I stay with one pump, if I want to turn on the spa or water features (pump on high) will I still be using the SWG and filtering the water at the same time? Is it just a matter of how the valves are configured/plumbed?

Hope that wasn't a dumb question but still a little ignorant how that all comes together