I'm not sure if i follow. You want to propagate points on a surface using the morph component? This is entirely possible. The only problem is that if you want to propagate a list of points, you'll have to either set the morph component as cross-reference or place a graft component between the point list and the geometry input of the morph component.
Although I'm almost certain this isn't really what you are asking for since you have the world 'point grid' in the title.