Reset Existing Item Limit
i.e. If the existing order limit is set to 50, Sales Reps will start fresh with 50 eaches available to be ordered.
Increase Existing Limit
i.e. The existing order limit is currently set at 50 and it should be increased to 100. A user who previously ordered 25 will now have 75 available; a user who has previusly ordered 50 will now have 50 available.