Attorneys have authority to bind their clients in any action or proceeding by any agreement in relation to the cause, made in writing, and by signing judgments, entering appeals, and entering such matters, when permissible, on the dockets of the court. Attorneys who are otherwise authorized by law to take affidavits and administer oaths shall not be disqualified to take affidavits required of their clients in any matter or proceeding of any nature whatsoever.
OCGA § 15-19-5