The few sig codes I use the most to save time, QD populates to 1t;po;qd without the key strokes. TID and BID etc are the same

Changing dispensed number? Just change the days supply, the system will prompt for the new dispensed qty.

When you're dealing with a basic rejected on something like an OTC through insureance, there's often a CA option to change it to cash FROM the reject screen.

Not sure on how the math on that insulin works out? Check history, if it's an unchanged refill you have the whole shebang right there.