Best way to do that is just make a # of frag allowed to entered in the pile ,and make up # tags 1,2,3,4..and give them out when the member gives in his/her frags ,
IE ,,
if the person give 3 frags ,they get a tag with that # 3 .so when its time for them to pick up from the bags ,you know how many to give ,this way no confustion