Hey there. There are directions for feeding on the back of the bottles. Specific target feeding instructions are on the Oyster-Feast label. Make sure to dilute the food first. Target feeding recommendations are not specific, so start off conservatively and monitor your water quality. You can also simply broadcast the food using a power head and then put the tank on feed mode and allow all of the invertebrates to "soak" in it; this is specifically for Oyster-Feast.
It will take some time for you to develop a feeding rhythm, so start slow and go from there. The Mysis-Feast can be target fed to larger polyp corals, so you can see how many they can eat and go from there.
Chad