Any type of furniture must be loaded into a un-locked room. You can not load any furniture into a Locked room.
Rooms:
http://www.imvu.com/shop/web_browse.php?cat=107-366Locked Rooms:
http://www.imvu.com/shop/web_browse.php?cat=107-109When you are ready to load a pose or animation spot into your room, open your imvu 3d messenger, click on your inventory tab, scroll down to your ROOMS tab and load the ROOM you want to put the spot in.
Now while still browsing your inventory look for your FURNITURE tab and locate the product you purchased. Click ADD, and it will add the spot to your room.