O.C.G.A. § 29-11-17 (2019)

(a) If a petition for the appointment of a guardian or issuance of a conservatorship order is brought in this state and this state was not the respondent’s home state on the date the petition was filed, in addition to complying with the notice requirements of this state, notice of the petition must be given to those persons that would be entitled to notice of the petition if a proceeding were brought in the respondent’s home state. The notice must be given in the same manner as notice is required to be given in this state.

(b) If compliance with the notice requirements under subsection (a) of this Code section would require personal service on any person outside this state, a court of competent jurisdiction in this state may order that such person be served by registered or certified mail or statutory overnight delivery, in the manner provided in subsection (e) of Code Section 29-9-4, or by a special process server, if the petitioner so requests in the petition or on the court’s own motion.

(c) If compliance with the notice requirements under subsection (a) of this Code section would require service on any person outside this state that is not sui juris, such person shall be served in a manner provided in subsection (d) of Code Section 29-9-4.