You can link sections of a model to items in other containers in your project that are related. For example, you can link a door in a model to a drawing of the door that is stored in a document container. Open the model in the IFC Viewer. Select the section of the model you want to link to the item and click Link Selection to item(s) . The Attachment Picker appears, displaying items in the project. Select next to the item you want to link to the selected section of the model and click OK.