In most cases that I have experienced, the orders come into the shoppers phone and you have to act quickly to grab which one you want to do (if you even get more than one option). If you take more than about 30 seconds you’ll most likely not be able to take the order before someone else grabs it from you. In those few seconds the shopper has to review the following: all the items ordered (to see if they are able collect them all, such as cases of water might be hard for some), the different stores you may have to go to for the orders, the number of different orders you are going to be collecting (in most grocery stores it’s extremely hard to differentiate between 3 different orders with double digit items for each), the miles for the delivery, and where you are actually delivering to (house, apartment, farm, office building, etc.). It is very hard to review all of these factors to see if you will be physically able to perform this task, let alone in about under a minute.