In the Help file you will find info about sorting here:
Virtual Building > ArchiCAD Model Views > Interactive Schedule > Sort Schedule Fields
But I don't think you can have it hidden, it will show in the Schedule.
A possible hack that might work is e.g. to make the ID a field these fields are sorted by. Make ID the last listed field. Then when you place the Schedule of a Layout as a Drawing adjust the borders of the Drawing so this last line of the Schedule does not show.
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