Hi and welcome to Knitting Help!
The instructions want you to P6 and then p1, yo, p1 only in the next stitch, then purl 9sts as usual. I couldn't find a good video for this but here's one for k1,p1,p1 all in the next stitch that is similae.
You'll be increasing 2sts each time you do this. If you have 63sts now, you'll repeat the section in the asterisks 5 times and then do the double increase once more for (12sts increased for a total of 75sts).