When categorizing objects, this is which catalog is which number To define a the catalog change the " s="number" " in Content\Objects\catalog_downloads.xml You can use notepad to open the file and save. Just make sure you don't create syntax errors. BUY MODE 12 - Seating 13 - Surfaces 14 - Appliances 15 - Entertainment 16 - Job Skills 17 - Decorations 18 - Miscellaneous 19 - Lighting 20 - Pets BUILD MODE 0 - Doors 1 - Windows 2 - Stairs 3 - Foliage 4 - Fireplaces 5 - Water/Pools 7 - Fences/Walls (not wallpapers) 29 - Debug/Terrain Tool