Find the reed size at the top of the chart.
Read down to find the sett you want, then across to find the order of sley for that reed in the far right column.
Or download a PDF of this chart.
These setts are a starting point. Different brands, different twists per inch, and other factors will affect the desired fabric hand. Check your specific yarn and sample, sample, sample.
Check Handwoven's Master Yarn Chart for the many wonderful yarns not listed here.