When creating a schedule for rooms, spaces, duct systems, piping systems, or electrical circuits, you can create an embedded schedule to show information about components that are members of these systems.
Video: Create an Embedded Schedule
You can use the Select available fields drop-down list to select fields from the category selected for the parent schedule and for the embedded schedule.
Use the Move Up and Move Down buttons to arrange the order of fields in the Scheduled Fields list, and click OK in the dialogs.The fields selected for the embedded schedule appear below each line in the parent schedule.