The marker goes on the needle. It doesn't mark a particular stitch, but rather marks between stitches, the way a bookmark marks between pages.
You'll work to 2 stitches before the marker, k those 2 together, slip the marker, and knit the next 2 together. When you're on a non-decrease row, just slip the marker from one needle to the other.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry