This is a survival server made by a parent who plays with their kids and wanted it to be way easier to stay together.
It has a custom plugin that lets a parent invite a child to a family group and then teleport them instantly without making the kid deal with requests. There is also an option that makes them spawn close to you when they die so you do not lose each other.
The whole point is to help parents play with kids without needing OP. The server works for both Java and Bedrock and it also has a live map you can check.