Abstract: Systems and methods are provided to organize Events, including transmitting invitations and receiving RSVP responses, and to organize Date Polls to determine availability of attendees. The Events and Date Polls can be related to various Groups. Each Group represents a Group of Users, who choose to attend Events and respond to Date Polls. A Graphical User Interface is provided that displays the consolidated status of all Date Polls, Events and Groups with which a User is associated, even if these Entities are created by multiple independent Administrators. Where the User is also an Administrator of a Date Poll, Event, Group, or any combination thereof, the software provides various options to allow the Administrator to customize data related to any of the Date Poll, Event or Group.

Abstract: An improved sender module closure system for providing a reliable, sealed interface between a sender module and a fuel tank at the access port thereof, includes an interfacing ring set composed of a base ring and a helmeted lock ring. The base ring is permanently connected to the fuel tank at the access port, and has a plurality of upstanding lock fingers. The helmeted lock ring is a separate piece, composed of a lock ring component and an integrally connected helmet component. The lock ring component has a plurality of finger apertures, one for receiving each lock finger. The helmet component protectively covers the sender module and has helmet apertures for external access to connectors of the sender module.