Selection after or during purchase?

I need a way for clients to be able to purchase tickets to an event, and during that process give them the ability to choose a seat at a table at the event. It would be great if it could show the layout of the tables and have them be able to either select a seat or at least the table number, and we’d need to be able to limit the number of seats per table. Anyone know of anything that can make this possible?

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