Please copy folder of "Reallusion" to C:\Users\Public\Documents\My DAZ 3D Library\data\DAZ 3D\Genesis 8\Female\Morphs"
Such folder doesn't exist on my computer.  It would be better to give not such exact folder location like if everyone will have it the same, on the same disc but some reasonable navigation for the folder to be found.
However my Daz is on disc C and the tutorial is not applicable. This is how two remotely possible forders look and none of them has a slightest sign of what you were showing in the tutorial.