So they haven’t claimed refugee status with UNHCR or the government yet? You can look at processing times for different countries but they all are going to take years. There is no “quick processing” country.
1. Have they claimed in Ethiopia? If not, they need to be approved through UNHCR which will take some time too.
2. Have you even formed a group of 5, and been approved?
3. If not, it will not matter where they file. It is many years.