Not sure exactly what you're asking, but you can either pour the whole thing in or, after the yeast settle, decant most of the supernatant and just pitch the yeast. If it's still sitting on the stir plate, it depends on how long you have before you're going to pitch it whether you're going to have enough time for the majority of yeast to flocculate, in which case pouring it all in makes sense. Some would also argue that it depends on what you're brewing and the size of the starter (i.e. do you want to pitch a 2L unhopped starter into a light beer....whereas for a stout, you certainly wouldn't notice it).