I continously look all over but yet can't find as to where I must add bluprints. If it's possible i'd like to add certain blueprints to barrel drops or supply drops. I'm using the Betterloot mod and can't seem to find anything in regards to people adding BPs to drops. My loottable looks like this, 

{
"ItemListBarrels": {
"antiradpills": 1,
"apple": 1,
"door.double.hinged.metal": 2,
"door.double.hinged.toptier": 2,
"furnace.large": 2,
"gates.external.high.stone": 2,
"chainsaw": 3,
"wall.external.high.stone": 2,
"door.double.hinged.toptier": 2,
"door.double.hinged.toptier": 2,
"flameturret": 2,
"chocholate": 1,
"fuse": 1,
"gears": 1,
"granolabar": 1,
"largemedkit": 1,
"metalblade": 1,
"metalpipe": 1,
"mushroom": 1,
"propanetank": 0,
"riflebody": 1,
"roadsigns": 1,
"rope": 1,
"semibody": 1,
"sewingkit": 1,
"sheetmetal": 1,
"smgbody": 1,
"metalspring": 1,
"syringe.medical": 1,
"tarp": 1,
"techparts": 1
},
"ItemListCrates": {
"antiradpills": 1,
"apple": 2,
"chocholate": 0,
"fuse": 1,
"gears": 1,
"granolabar": 2,
"largemedkit": 1,
"metalblade": 1,
"metalpipe": 1,
"mushroom": 4,
"propanetank": 0,
"riflebody": 1,
"roadsigns": 1,
"rope": 1,
"semibody": 2,
"sewingkit": 2,
"sheetmetal": 1,
"smgbody": 1,
"metalspring": 1,
"syringe.medical": 2,
"tarp": 1,
"techparts": 1
}
}

I was about to add rarity but I'd just like to get the bps done so I won't have to worry about this again. If anyone could explain exactly what I must do in order to allow BP drops from barrels or supply drops (I'll post my supply drop config if needed), then it's be greatly appreciated. 

Thank you.