Category selector
Use the Category selector to control which objects are read from the IFC file and, thus, are visible and available for synchronization in the dRofus interface category selector. The Category selector is available from Item module → BIM → IFC configuration → Categories.
![image-20240423-090711.png](../../../__attachments/2324627491/image-20240423-090711.png?inst-v=0afdfd47-3bc6-4c62-adaf-adf72ef5899e)
The dialogue will display all IFC classes and sub-classes, where you can activate and deactivate classes on a detailed level. If nothing has actively been selected in the IFC classes hierarchy, all classes are shown. This is the default setup in dRofus;
![](../../../__attachments/2324627491/image-20220127-122431.png?inst-v=0afdfd47-3bc6-4c62-adaf-adf72ef5899e)
If you select an IFC class with subclasses, e.g., IfcFastnerer, all sub-classes will be shown in the image above. If you choose an IFC class, all unchecked will not be displayed. In the example below, we have selected ‘IfcFurnitureElement’ in the Category selector, and we can see that the IFC pane has updated to only show the Ifc class ‘IfcFurnitureElement’ and its associated Items;
![](../../../__attachments/2324627491/image-20220127-122848.png?inst-v=0afdfd47-3bc6-4c62-adaf-adf72ef5899e)