I am using this code on all 3 nrf52 Development kit ( DK ) for server, client and relay+proxy nodes as mentioned in below setup...
1) nrf DK named A works as on/off server
2) nrf DK named B works as on/off client
3) nrf DK named C works as PROXY + RELAY node.
4) Provisioning of proxy node C is done by nrf mesh mobile app.
My question is... Out of this all 3 nodes, which nodes act as central and which as peripherals ??