Add 1 cup filtered water to the instant pot, then place your steamer basket inside (you can use the rack that comes with the instant pot, but a steamer basket will allow you to do more eggs).
Place eggs into steamer basket. They do not need to be single layer, we have done as many as 32 in one shot.
Secure lid and make sure the vent is toggled to 'sealing'. Turn on manual for 1 minute. Natural pressure release for 5 - 10 minutes, then place eggs into an ice bath for at least 5 minutes.
Notes
This is what works well in our kitchen, but feel free to play with the times as needed to make your own perfect instant pot hard boiled eggs!