Most likely no. The covering attorney is only appearing in the place of the attorney or law firm which represents that party and already has an appearance on file. Judges are familiar with coverage attorneys appearing for the attorneys of record and do not typically require the covering attorney to file a separate appearance with the court. 

If a judge requires an appearance to be filed by the covering attorney, the covering attorney can file his or her appearance then move the court to withdraw his or her appearance before the hearing is over.

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