How to assign a CKRecordZone to a CKRecord

I am trying to make a database in which an admin user can create a group which is stored as a group CKRecord type. I want this record to be placed a custom zone that is named after the group name that the admin user decided on. How do I initialize the group private Record to be assigned to that custom zone (without using the deprecated function).

func createGroup(groupName: String){

    let groupRecord = CKRecord(recordType: recordTypes.group)


    groupRecord[groupRecordType.groupName] = groupName
    let share = CKShare(rootRecord: groupRecord)
    share.publicPermission = .readWrite

    let groupZone = CKRecordZone(zoneName: groupName)

    //Need to somehow connect the groupZone to the groupRecord

 }

You can use a different CKShare initializer:

CKShare(rootRecord: CKRecord, shareID: CKRecord.ID)

The recordZone is part of the CKRecord.ID:

CKRecord.ID(recordName: String, zoneID: CKRecordZone.ID)

So something more like:

func createGroup(groupName: String){

    let groupRecord = CKRecord(recordType: recordTypes.group)

    groupRecord[groupRecordType.groupName] = groupName

    let groupZone = CKRecordZone(zoneName: groupName)

    let shareID = CKRecord.ID(recordName: groupName, zoneID: groupZone)

    let share = CKShare(rootRecord: groupRecord, shareID: shareID)

    share.publicPermission = .readWrite
}

The recordName should be something guaranteed to be unique though - otherwise you can potentially run into problems.