Xbee - Sensor connection

I have bought a “Drop-in Networking Starter Kit”. I have 2 board Xbee Series 2 and I have made a connection between this 2 boards.

My question is how can I connect an analog sensor to one of two xbee? And what are the settings for X-Ctu for the receiver board and for transmitter board. Thank you!

This is my xbee board: