If you want to change some elements details just once and save it again in the library (catalogues), you can double click the element preview image that you see in the components window.
By double clicking the preview image with the left mouse button the Application will show you the element details mask, where to change item code, description, price, standard elevation from the floor, etc..
Click the Modify ... button if you want to scale or resize the object, or even if you want to assign some materials to the available layers.
Remember that those modifications affect the item available in the Application library, not the one(s) already present in the project.
This article is valid for DomuS3D® 2017 and later versions