If the multiple processing demand time is less than {TAIL ~ the aggregating queue time constraint} for {HEAD ~ each queue time limit tool}, then any lot can be selected to be processed 
If the multiple processing demand time is less than { TAIL ~ the aggregating queue time constraint } for { HEAD ~ each queue time limit tool } , then any lot can be selected to be processed
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH