Configuring TP-Link TD-W8961NB QoS

[Spartak]

I recently obtained the TP-Link TD-W8961NB WLAN modem-ADSL router.
Since the Internet connection is shared, I would like to set up some traffic prioritisation. But I read the user guide and built in help and still barely understood anything. So if you know TPLink routers it don't have to be the same model, the QoS settings is very likely to be the same every where.
also you may look in manual to see what the settings look like.