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The hearing is set to take place at Sheffield United's Bramell Lane ground.
Gregory is defending his actions on Boxing Day last year, when he had a heated exchange of words with assistant referee Ray Gould. The incident resulted in match referee Andy D'Urso sending a report to the FA and the subsiquent hearing.
If found guilty of the offence Gregory could find himself sending instructions to his men via telephone and assistant Billy McEwan. The only action that is likely to be brought by the FA is a touch-line ban which would see Gregory having to sit in the directors box.
Gregory said in an interview with the Derby Evening Telgraph reporter "I'm hoping that common sense will prevail. This is something that happened when I was with Villa and should not affect what happens to Derby County".