Try making two recipes in beersmith with the different grains. Or do three recipes, one for the mash process, and then two more that start with half of those results each and include the steeping grains, hops, etc.
Kelpie Home Brewery, Lafayette Colorado
Primary: Creek Dog Stout x2, Two Dogs IPA, Grinning Kelpie Wheat
Secondary: empty :(
In Bottles: Belgian Wheat
Here's what I did.
I created three recipes.
One for the big beer and one for the small beer.
I then took out all the uncommon grains between the grain bills and adjuncts and did a preview of the brew sheet. I then created a recipe of the average of the big and small beer and this is my partigyle recipe. My first runnings should be approx. 60% and my second runnings approx. 40%.
For the grains that I can't steep for the big beer - I'll do a mini mash and add them to the big beer kettle. For the small beer I'll adding them to the tun after I do the first runnings for the first beer.
We'll see how off I am on my OG's for each beer and adjust accordingly. I'm not that worried about it as this is a first parti gyle brew.