Debbie Bliss Crossover jacket

I am working on the sleeves right now from one of debbie bliss pattern in her book. I am confuse with the following directions and wondering if anyone can help me:

“Cont in rib and inc 1 st at each end of the 5th and every foll 4th roll until there are 72 sts ( I start off with 54 st).”

So does this mean that I should increase 1 stitch at the end of every 5th stitches and repeat this at every 4th roll until I get 72 stitches?

Increase at [U]each[/U] end of row 5 and at each end of every following 4th row. So increase at [U]each[/U] end of row 5, 9, 13, 17, 21, 25 etc until you have 72 sts. You’ll be increasing 2 sts in each of these increase rows.