Adding a Wi-Fi printer to a network using the WPS (Wi-Fi Protected Setup Method) feature on your Broadband Router is, well straightforward. Press the button on the WPS on the router and then press the Wi Fi button on the Printer. 
The machines talk to each other and less than a minute the printer is now on the network.
The Question I have is how do you do that if your Router is a Airport Extreme, there is no fancy button for WPS on the Apple Device what do you do. The process is rather simple but before we go into that I would have to ask one question.
Add WPS Printer to Airport Extreme
Recently came across an issue registering a Apple TV 3 inside a sky broadband network. Seems one of the ports is not open thus allowing the Apple device register over the internet. This issue materialised in the last few weeks with a number of clients with their new Apple TV. 
This one is interesting it came about last year 2014 with people coming in with issues of wifi dropping on random devices. After a lot in investigation we managed to narrow the findings down to BT Home Hub 4 + 5 and their joint wifi optionto transmit both on 2.4 and 5GHZ.