Laying it out properly, with a good amount of space for the guy-leads is critical (have at least a 9m(30') circle available.
The center of the tent has a somewhat messy collection of lines, with a cloth sack on them. Un-tangle the lines so the sack drops to the floor (still connected to the 8 lines coming in through the ceiling); then place the top of the center mast centered between the 9 lines' grommets in the ceiling, and place the cloth sack over the bottom of the mast, so it can provide an anchor-point when you tighten the 2 cinch-lines to allow hot air to escape at the tent's peak.