binding posts

Also, not only do you defeat the purpose of running the speaker bi- if you don't remove them, you can damage the speakers.

Only if you cross wire them. 

You can run just 1 pair of speaker cables , but you need a jumper still

those metal plates are trash usually holdover cheap brass , a good set of jumpers 

just buy 2 ft of decent ofc copper awg 12, and just buy some spades or bananas 

you can get Cardas, or vampire gold copper , or WBT, orFurutech for a lot more monies  and sounds much better then the cheap jumper plates.

If you stay with single speaker cables, connect them to the binding posts for the midrange/tweeter driver(s), for the (I hope) obvious reason.

@audioman58  

If I'm bi wiring or bi amping why would I want jumper leads?

@mazian I think if you’re bi-wiring (2 sets of speaker cables, one amp) or bi- amping (2 sets of speaker cables, two amps) you’re right, you don’t need jumpers. 
 

That said, I had good luck to my ears replacing my stock brass plates (~$4K pair of speakers) with quality jumpers (one amp, one set of speaker cables plus one set of jumpers). Ymmv.

In short answer to your question, definitely remove the brass plates if you’re bi-wiring or bi-amping.