How does the “Pick-Up Date” field work?

How does the Pickup Date field work?  1/ If no “pickup date” is chosen, then all available postings will be shown; 2/ If a “pickup date” is chosen, then all available postings will be shown starting from that selected date onwards. For example, if a search was made for the 10th, the resulting postings would only show loads available for pickup on the 10th and onwards. This way, users can also see postings for the 11th, 12th, etc in case no loads are found on the 10th.