IS IT POSSIBLE TO ADD FEW FEATURE:

LIKE IF I DON’T HAVE AN ITEM IN STORE ,,, NO ONE CAN ADD IT,,, REMOVE NEGATIVE ITEM ADDING FEATURE,
ADD MONTHLY SALE REPORT OPTION IN YOUR DESHBOARD,,,,
ADD MULTIPLE BILL PAYMENT RECEIVED IN BULK OPTION SO THAT PEOPLE HAVE NOT TO DO SAME TASK FOR MULTIPLE BILL AGAIN & AGAIN.