If using frozen shrimp:Pour 1.5 c water into your Instant Pot and put a vegetable steamer basket inside your pot with your frozen shrimp inside.Set to pressure high for 0 minutes, do a quick release.Drain pot and follow below instructions to make into Instant Pot garlic shrimp.
Set Instant Pot to saute, low, and add butter.
When butter is melted add minced garlic.
Once butter starts to sizzle add your shrimp and toss with butter and garlic.
Cook 1-2 minutes if you're shrimp is fresh, until shrimp is pink and cooked through as much as you desire. If shrimp was frozen and you used method above to thaw/cook them then once butter sizzles turn your pot off/cancel, put shrimp in, mix with ingredients, and take out immediately to eat.Remove immediately and sprinkle with chives if you like. Enjoy.