Ingrid may correct me if I'm wrong, but here is how I see those instructions:
Row 11: rib 23, wrap & turn (you will leave the 207 other sts unworked on the needle)
Row 12 and every alternate row: rib to end (so you are ribbing back across the 23 sts from the row above on this row - next time you will rib across the 37 sts to end, etc)
Row 13: rib 37, wrap & turn (you've gone past the 23 from row 11, you now have 193 left on the needle that you won't work yet
I can't explain how to do short rows (they're still a bit of a trial for me) but the videos here do help understand how to do it and how to pick up the wraps!