How to configure a node for control model?

How to configure a node for control model. I have used light switch on/off template to implement a control mode but i i don't know how to make a control logic for client. Have to use only client at a time but if i run the code i'm getting error and it run both client and sever at same time. I have merge the client and server program for control model but i'm getting a error as NRF_INVALID_STATE which is in nrf_mesh_init function.Please help me and thanks in advance.