Korean multigrain rice or Japgokbap is a healthy and tasty mixed grain rice which can include grains like sorghum, millet, red beans, black beans and chickpeas.
Soak all dry beans and grains for at least 6 hrs. Except for regular short grain rice and sweet rice. Change water 2~3 times during soaking.
When beans and grains are fully soaked, drain and discard water. In your rice cooker (I use Korean pressure rice cooker) pot, add sweet and regular rice, all the soaked beans/grains. Then add fresh water. I use 1:1 dry grains to water ratio. Add salt.
Select Mixed Grain Rice or "Japgok" function and Cook. Mine came up as 45 minutes cooking time.