Sorry just saw this post.
“Leave Network and Rejoin”: Only applicable to Zigbee devices. Tells the device to leave the network, and then rejoin the network again. This can be used in some cases for troubleshooting.
“Identify” Also applicable only to Zigbee devices. Tells the device to identify itself, this can be in case of Rainbee through a specific LED pattern. This is very helpful when you have an array of similar devices and want to troubleshoot or “Identify” a specific device.