A computer system for defining attributes associated with attended delivery/pickup locations is described. In various embodiments, the system is configured to enable an authorized user (e.g., a manager of an attended delivery/pickup location) to define certain attributes of a particular attended delivery/pickup location. In some embodiments, the system is configured to verify that the particular user is authorized to define the one or more attributes associated with the particular attended delivery/pickup location (e.g., by checking a list of one or more authorized users). Once the one or more attributes are defined, in one or more embodiments, the system is configured to accept or reject parcel delivery requests based at least in part on the attributes. In further embodiments, the system is configured to facilitate a return of a particular item to a retailer via the attended delivery/pickup location.