Hops blend function

I am working n a recipe that uses 5 different hops. I am going to add equal amounts of all 5, for 3 additions. That means I have to input 15 hop additions, it would be easier if I had a "blend" then it would only be 3 entries and not 15. It would be nice to have some way of say, inputting the data of the 5 hops and then basically have that group as an object with the proper IBU calcs.

Also since I can't do this, it would also be great if I could resize the design window where it lists the ingredients.

You could define a new hop ingredient that is a blend of your hops. Then simply add that "ingredient" to your recipe.

I could that Tom, but how do I calculate all the variables of the 5 different hops into 1?

The only one that really matters is aa%.  You can simply use the weightedaverage of the aa% from each hop.