Modding Spells

Dear community, thanks for the many great guidance and developments which have been brought together by you tremendous efforts ! Even thought the games game out ~15 years ago I still enjoy the new dimensions i find in games and underlying mechanics. For this reason I have also been replaying the games, especially Icewind dale 2, but after the first 10 levels or so i find my´self spending so much time on micromanagement of spells and buff. And eventually lose fate and start a new party :) Would i find a great improvement to the games would be if the single target spells, "spirit armor", "stone skin" etc. could be recreated to also so have an AOE effect. Simply to reduce the time it takes to cast all of these on 6 party members and possible summons. I have searched for how the spells work, and used Near Infinity to inspect the spell, but I simply do not understand what in the spell that specify the area of effect. I can find attribute that specify where to cast the spell, and the range there it can be cast to, but not the area size. Can you please assist me.