You can configure your floor plan with as many round, square or rectangle tables and easily indicate the number of seats. Once this step is done it's an easy drag & drop system to place your guests in their seats. You can zoom in to view one table or zoom out and see your whole room. And when a new vision for the room comes to mind... Drag the tables where you want them. The other smart thing about this software, you can view your seating plan as a floor plan, a spreadsheet, or a table format.
At $35, is appropriate for anyone planning Bar Mitzvahs, Weddings, formal dinner parties and charity events. You can try the software for free at their website. (I'm no, not getting a commission, its a great tool to share with you.)