I lost my mind and started talking about WS, when you will just have RS since you are in the round - perhaps that’s part of your confusion - sorry!
“Normally” you would decrease every other round til you got down to the stitches you need/like for the shape of your toe, then graft them together. I say 'normally" because of course every pattern has it’s own thing going on and you yourself may choose to change the pattern.
In thinking about this further, I’m wondering if the decreases in the pattern are correct (although it really doesn’t look like it from the pic) - the only issue there is that 24 st will be left over, but perhaps when the person wrote “Kitchener stitch remaining 12 sts to close toe”, they were trying to say that you will have 12 on each needle, since when you get done with your decreases you’ll shuffle your st around so you have the top st on one needle and the bottom st on a second needle.
If I were making this sock, I would probably insert a lifeline, info and pictorial [B][COLOR=“Blue”]here[/COLOR][/B], then finish the knitting as the pattern states and try it on, see if I liked it and graft the toe if I was satisfied. If it wasn’t what I wanted, then I’d frog back to my lifeline and just do the decreases every other row til I got the length I needed.
The pattern as written would make a wider, gradual (less steep) decrease towards your toes, and wind up with a kind of boxy toe - your grafting would be about 1 1/3" across your toes. Decreasing every other row would make the toe part a little pointier, but you’d probably have to stop before you got down to 12 st total (6 on each needle). Of course you can stop wherever you want and graft whatever amount of st together, whether it’s 12 or 24 or whatever. Keep in mind also that decreasing every other row is a more symmetrical, even decrease than how the pattern is written. How you finish the toe part all depends on what you want your sock to look like when your done.