Rhoads hyd flat tappet lifters setup confused?

I’m replacing my standard hyd mopar flat tappet lifters in my 383 with rhoads hyd flat tappet lifters. The installation directions are confusing to me at one point. It states to set them up by determining when the pushrods just start to compress down ever so slightly on the cup within the lifters ( approx 1/16 in). Then 1/2 turn to be sure to eliminate any remanding lash. Then lock down on adjustment nut. This seems logical and makes sense. What I’m confused about is it states not to soak or fill up the lifters with oil. If you don’t fill up or soak the lifters in oil how can you create resistance against the pushrod that is sufficient to set zero lash and lock down adjusting accordingly? Anyone have experience installing rhoads lifters?
Carl