Normally I’d say the setup is pretty straightforward, but … on both speakers I see a thru output (for daisychaining) yet no hi-pass filter on either. And that worries me. Better check with the sales folks.
Typically the sub will have the filter and be able to handle a stereo signal (as does the 618S), so you’d run the master out from your mixer to the single sub, then two xlr cables out to each of the tops, from the hi-pass port. You don’t want the sub-low to also go to your tops. Occasionally some brand will turn it around and have the low-pass in the tops, so you go mixer to tops to sub. But in this case none of the speakers seem to have filters.
As said, check with the sales folks.