Place 2 cups of water inside your Instant Pot and set a 3qt metal or glass bowl on top. Press the Sauté function on your Instant Pot. Make that your setting is on MORE.
Place 2 tbsp melted candy melt into one half of a bomb mold and, using the bottom of your tablespoon measuring spoon, press the chocolate up the sides of the mold, keeping it thick but even. Repeat with 12 bomb mold halves.