Est. Budget: $500.00
add a code to user registration. all users with that code will automatically joined a prepared group.
this group is pre set by admin who adds this info: delivery address and day+time of delivery.
SO: all users of group X will have the same time+address of delivery and will not be able to change delivery address+date set by admin
If admin changes delivery day or address users must received an alert (mail).
DAy of ...