Please can you help, My pattern is telling me to. Cast off knit wise and at the same time dec3sts evenly over cast off by working k2tog instead of k1 3 times.
Yours confused margaret

Welcome to the forum!
Divide the bind off sts approximately by 4 and decrease at 3 points across the row. Don’t stress about this being precisely worked, just approximately is fine as long as the decreases aren’t clustered in one place. So bind off some number of sts, k2tog, bind off, bind off more sts, k2tog etc.

Thank you