Using marker

Pattern reads "pm “(place marker), next row reads"sm” does that mean same marker? or does that indicate something else?

The ‘sm’ means ‘slip marker’, or move the marker you put on the previous row. You just slip it from one needle to the other when you come to it.

PM means "place marker"
SM means “slip marker”

To slip the marker you just slip the marker from the left needle to the right and and continue the pattern.