Those stones are very powerful and not everyone can handle their effects. On top of the body, I group 2 chakra points together, I usually start at the heart. I put either rhodocrisite, malachite, emerald, aventurine, chryscocolla, bloodstone, strawberry quartz, green tourmaline, rose quartz, rhodonite, green calcite, pink calcite, moss agate, moldavite, rubellite, ruby in zoisite. Which stone I place depends upon the blockages I feel, and what I want to accomplish. I don't place them blindly.
Every stone has a different healing function.
You can use more than one. The crown chakra already has the stones, so do the feet. Then I balance the body by placing stones at the root chakra. I put either, red jasper, smokey quartz, rutilated quartz, zincite, roumanian quartz diamond on the legs around the root, garnet, ruby, red tiger eye. Now, depending upon how much the client has worked with crystals, I put single or double terminated quartz around the colored stones on each chakra, in a spoke wheel pattern.