You may have an area which you book out for events or functions as a whole space for cocktail or buffet style service.
In simpleERB, you can set up an area to be booked out as a whole.
Create a new area and set the minimum booking size required.
Head to the Table Layout setting and in the new area add a single table which you can set to the maximum number of covers that area can hold.
This allows you to book the single table for the whole event.