The simplest possible implementation of the meeting interface, much updating required, again, nature of sets must be looked into.
These two are just the simplest possible conversions of their interfaces with no functionality whatsoever yet.
I have added partial functionality for the addFutureMeeting function, however I need to do more research into the functioning of the calendar.
I have made future and past meetings extensions of meeting in an attempt to circumvent functional redundancy though I still need to look into both Calendar and Set in much greater depth.