Selfhosted: Second network for a friend

Describe the problem

Is it possible to have a second network (?) in a self hosted setup for a friend? I want them to be admin of their network, add their own clients and be completely independent of my netbird network. Is that possible? Thanks

And kudos regarding the recent release, ipv6 is a great addition for me and it works great here.

Iam also interested in the same but i think it’s not possible since they have the MSP offer in the cloud for exactly that.