My Zoji (the NCC-18) also makes damn awesome oatmeal. Take 1/2-3/4 of the measuring cup of steel cut oats (I use McCann's but use whatever), then fill the rice porridge line to 1/2 (no higher or it will boil over), set the timer so it has at least 5-6 hours to soak (or else it's too chewy), set cooking style to porridge (or else it burns and makes a mess), then wake up to damn awesome oatmeal. Just make sure you stir it for a minute before you scoop it out.
Oh, if you're at altitude, it may boil over a bit. No help for that. I'm at 490ft above sea level, and it doesn't boil over, but when I go up to the mountains, about 3,000ft, it boils out the top vent a bit. Just clean up the mess, I guess. (Or don't use it for oatmeal.)
At sea level, it takes all of 3 minutes of prep before bed, compared to 20-30 minutes of stirring if you want to make proper steel cut oatmeal. (Add 10 minutes of cleaning at altitude.)