If you are looking for a quick way to place multiple tables in your event at once, Templates are just what you need!
First, select Templates at the top of the Object Library and then choose the style of template you would like to use:
Next choose the type of object, and other details about the Template. You can save these selections as your default for future templates.
Finally, Click, hold & drag your cursor directly on the floorplan itself... the Template will populate within the box you create with your cursor. As you drag, you'll also see the table and chair count appear in the lower-right.