There are two ways:
1 - If you wish to include the walls => draw the first set => select all => copy => paste => move around as desired => I'd suggest that you create a perimeter with a shape in the Detail tab, so you can use the shape as "handle" to move the elements (you can delete the shape after). Of course, you can move the set using Edit => Move. Or, you can use the arrows in your keyboard.
2 - If you wish to create a set just with the furniture and elements => draw the first set => select the elements => Go to the Templates tab => Create a template => you can drag and drop it in the new location.
Hope this helps.