You simply use a razor and tweezers to remove the protective sheath covering a node and apply a tiny amount of the paste on the undeveloped node beneath. The paste contains a growth hormone that encourages the node to develop into a new baby plant or Keiki. I applied the paste to four nodes on the flower spikes of two Phalaenopsis plants on March 5, 2017. In only twelve days I can see new plants forming on every node that was treated. If the plants are flowering at the time you apply the paste, like mine are, there is a slight chance that the baby plant will form and produce a flower spike. How cool is that?
It will take several months before the Keiki forms a decent root system and can be removed and planted, so leave it attached and let it grow. There are several how to videos on youtube.com.