You can manage IFC Data in the following ways:
In the Tags and Categories panel of Element Settings, you can assign and view IFC Attributes, standard and custom IFC Properties, and IFC Classification References. In addition, use Element Settings to carry out Element Classification (by IFC Element Type, Structural Function, and/or Position).
Use the IFC Manager to get an overview of the IFC hierarchy of the current ArchiCAD project; to navigate between that IFC model hierarchy and ArchiCAD elements; to manage these IFC data from a global perspective; and to create and manage IFC Assignments and IFC Type Products (this function is not available anywhere else). Unlike the Element Settings, you can use the IFC Manager to assign new IFC data not just to building elements, but to any IFC Entity of the project (including Stories, IFC Site, IFC Building and IFC Project).
See IFC Manager.
Note: Naturally, the Attributes, Properties and Classification References defined in the IFC Manager are immediately reflected in the relevant Element Settings dialogs, and vice versa.
In each project, you can store your custom IFC Properties and the Property Sets they are contained in, in so-called Schemes (.xml files). Use the IFC Scheme Settings command to share (export and merge) custom properties files between ArchiCAD projects.
See IFC Scheme Setup.
The IFC Options command provides a way for data management at the project level. Use IFC Options to assign the owning person and organization data to the IFC model (part of the Owner History). Also in IFC Options, you can assign mapping/conversion rules between all Library Part parameters and their corresponding IFC Property. Library Part parameter mapping will affect both IFC export (since Library Part parameters can be exported as particular standard or custom IFC properties) and IFC import (since incoming IFC properties can be interpreted as particular Library Part parameters). The mapping rules can be stored in .xml files.
See IFC Options.
Use the Find & Select command to search for any elements by their IFC Attribute, IFC Property, or Classification Reference values.
See Find and Select Elements by IFC Data.
Use the Interactive Element Schedule to list any elements by their IFC Attribute, IFC Property, or Classification Reference values.