How to track table seats for sponsored events?

Hi, I work for a large corporation which donates money to sponsor events for other organizations. With our sponsorship, these organizations provide a number of seats at tables during the event for our executive leadership and various other top tear employee groups to use. I've been tasked with creating a space in Wrike to track various aspect of these events but the following items I can't seem to figure out how to make happen:

• Number of seats remaining (from Total available)
• A way for eligible employees to register for an event (first come first served). These registrations will deprecate the number of seats remaining.
• During the registration process or before, allow the registrant to see who is attending the event.

Any advice or directions for the best way to accomplish this would be appreciated!