I have three LANs (essentially, just three difference hardwired computers) coming off my BT router and want to prioritise one of them, so it always gets the full bandwidth it needs.

So I've bought the TL-R470T load balancer, but on logging in, I can't work out whether I need to be configuring Transmission Load Balancing, Routing, Switching.... or indeed any of the other settings. I was expecting to see options for Quality of Service, or something more self-explanatory, but I'm confused. Can anyone help decode the language in the user manual for me?  I just need to set one port to the prioritised over the others.  Thanks!