Question about cabling in three-way speakers

I have a question: In a three way speaker with bi-cabling option, the upper terminals are linked to the tweeter AND midrange, and the lower is linked to the woofer, OR the upper terminal is connected only to the tweeter and the lower to the midrange and tweeter?

I want to know this because I'm not going to use two cables with my loudspeakers, and I want to connect the cable to the terminal that is linked to the midrange.

My loudspeakers are a pair of KEF IQ-9.

Paulo