Just go into the "grains" part of ingredients, and bring that up. Click on "home" and then click "add" on the little grain picture on the toolbar, and add the simamar. You can put in the SRM, the PPG, the max % in the batch, etc, from info from the maltster. or you can copy the info from dehusked carafa III and just correct the sinamar info.
Broken Leg Brewery
Giving beer a leg to stand on since 2006