The packer object is a very useful tool for managing furniture groups. The next tutorial about kitchen design is a good example.
Take a top view. Start the Building tool and draw a simple rectangular building. Then start the room tool. Name the room as kitchen and click in the middle of the building to add the room. Switch to the materials tab and assign suitable texture maps to the kitchen floor, wall and the ceiling materials using the property window. Create a point light in the middle of the kitchen, 0.3 meters below the ceiling.
Go to the grids tab of the select window. Drag and drop a 0.1-meter grid to the view window. It is a suitable grid for kitchen design.
Switch back to the geometry tab of the select window. Take a top view. Open the Browse Object Library window from the popup menu of the select window. Drag and drop the object 'Cabinet' from the furniture folder into the view window, close to the top left corner of the back wall. Drop the cabinet closer to the back wall than the side wall, so that it snaps primarily to the back wall. If the drop position was properly chosen, the cabinet ends up in the corner as in the example picture.
Click the Packer tool of the Creation tab of the toolbar. Click Accept to finish the tool with the default options. The new packer takes its orientation from the selected cabinet. Rename the packer as 'wallcabinets'.
While the packer is selected, hit the Tab key or apply Make Current from the popup menu of the select window. Then new cabinets will be inserted automatically to the packer.
Now you do not need to aim at all when inserting new cabinets. Just double click the item Cabinet again in the object browser window. The new cabinet goes automatically to the end of the row.
The loaded cabinet is automatically selected. Change its width to 0.6 meters using the tool bar controls.
Double click the icon 'Cabinet_open' on the object browser window. Change the width of the new cabinet to 0.8 meters.
Double click the Cabinet icon 2 times more, to add two new cabinets to the row.
Select the second cabinet. Change its width back to 0.4 meters. Cabinets move to fill the gap.