I'll apologise in advance for being pedantic. I'm pretty sure you meant "hatching" and not "laying". Cherry shrimp do not lay eggs- they carry the eggs on their bodies, under the swimmerets, and they hold onto them until the free-swimming baby hatches out.
I'm pretty sure you meant that the eggs are hatching, because you mentioned seeing legs. But this forum has a lot of readers/lurkers. So, I will say that if you actually see a cherry shrimp dropping its eggs unhatched, that's a problem (often caused by a stressed shrimp), and the offspring will not survive unless you have, or devise, an "egg tumbler" to keep them moving around (as the mother does under her swimmerets). Personally I think tumbling dropped shrimp eggs is too much effort considering the ease with which cherry shrimp breed, but I know some shrimp keepers feel differently- to each their own.
Again, I know this sounds pedantic and I'm sorry for that, I don't mean to insult you.