I should know these two things, but....

Speakers with two pos/neg, like this:

https://www.avsforum.com/media/no-title.187873/full

Pos op of rcvr > red spkr pole

Neg op of rcvr > black spkr pole

K, got that.

Do I do this horizontally, or vertically? Or does it matter?

And if there is one l/r op from the rcvr, do I make use of the other two poles somehow?

Thanks in advance.