Special profiles are required for the NCM calculations, based on the NCM Building Type and the selected NCM Activity for the room. These are imported automatically from the NCM database using the when using the VE Compliance application. However, although they are imported into the project database, they can be viewed but cannot not be edited, and cannot be deleted from the project.
The Allow NCM edits option offers an override – but this is for use in-house by IES and it is not recommended that any NCM-specific database items are edited.