Put the uncooked rice in your cooking pot and washes it twice (depends on the rice. Rice in some countries don't need to be washed)

After drained, add 2 cup of water

Put in salt and ground black pepper, stir

Put in butter (or olive oil and stir)

Close the lid of your rice cooker, plug the cooker in, and press the switch to turn it on

The switch will click after the rice is done, don't lift the lid to check on the rice, let it steam inside the pot for about 5 minutes