This article states that parents may enter into binding arbitration over matters of child custody, parenting time and parenting plans. Parents choose both the issues to be addressed in the arbitration and the arbiter, and if all issues are not addressed in the arbitration the judge "may supplement the arbiter's decision."
Georgia Code 19-9-1.1 - Parental agreement to binding arbitration on issue of child custody and related matters
The State of Georgia. Jan. 1, 2019https://advance.lexis.com/documentpage/?pdmfid=1000516&crid=b908c0b8-4dff-4a70-b1ea-ee2e49604df1&nodeid=AATAAKAACAAD&nodepath=%2FROOT%2FAAT%2FAATAAK%2FAATAAKAAC%2FAATAAKAACAAD&level=4&haschildren=&populated=false&title=%C2%A7+19-9-1.1.+Binding+arbitration+on+issue+of+child+custody+and+related+matters&config=00JAA1MDBlYzczZi1lYjFlLTQxMTgtYWE3OS02YTgyOGM2NWJlMDYKAFBvZENhdGFsb2feed0oM9qoQOMCSJFX5qkd&pddocfullpath=%2Fshared%2Fdocument%2Fstatutes-legislation%2Furn%3AcontentItem%3A5VTJ-6D90-004D-816H-00008-00&ecomp=k357kkk&prid=25aa1e22-a471-4937-b31a-00f366893bd6