briso, I too asked that question not too long ago and Soquili provided this answer, which worked like a charm:

Bob, put two shapes on one page. Apply one texture to one and the other gets the other texture. Then insert a page break between the two shapes. Trying to apply textures with the page break in place applies one texture to both objects.

It drove me nuts (that's my current excuse for being nuts ) before I figured out to texture then split into pages.