Lay the pouch on its back and stick your plugs through the pre-cut slits
512, 432, 406, 392, 342, 338, 288 plugs work best, but you can use anything up to a 1204 cell pack (you may have to stretch or cut the slits a little. Your premium plants like fuchsia, new guinea impatiens, lantana, geraniums, etc may require you to stretch the slits a little bit - they are well worth it when you see the finished product!
You may chose to leave the pouches on the floor or a bench to set in for a few days before you hang them.