Multiple BLE Mesh provisioners, each one for an app

[ThatRTOSGuy]

I have multiple BLE Mesh provisioners close to each other and several nodes, too. Is it possible one provisioner to send/receive data only to/from some particular group of nodes? With success I tried to set a different netkey to each provisioner (subnet)(esp_ble_mesh_provisioner_update_local_net_key()), but I had no success when changing the device key on nodes (esp_ble_mesh_node_add_local_net_key() only can be called after node is provisioned). Other alternative seems to be use different Appkeys, but I don't know how to set an AppKey to a node (as in the first case, this is Ok for the provisioner). In other words, I want to reach isolation between the groups / apps. Can you help me?