as I explained before, your Clints can reshare to their Clients if you allow this in your server config
F: user pass 2 0 0 { 0:0:2 } {} {} IP_or_DNS_of_Client
this means you can reshare to one more hop
...
F: user pass 2 0 0 { 0:0:1 } {} {} IP_or_DNS_of_Client
this means your client is not allowed to reshare