I leave it to work in ans do its stuff while washing the rest of the car.
Sometimes a kitchen pan scrub gets the worst of, but comes up nice with minimal work.
Being a bore, washing the car starts with, quick jet wash rinse, wheel cleaner, leave on, autosol ext exhaust tips leave on.
Wash car (two bucket method) wash car again - just for the bits I miss the first time ;)
Rinse off with jet wash, clean wheels, clean exhaust tip, rinse down again. Towel dry.
Depending upon the weather etc wax.
Comes up great each time