Please Bare with me, this is my first attempt...lol
I am using this pattern
What I do not get is this.
Cast on needed stitches (5 for gauge x waist size ~ example medium waist of 17x5=85 stitches. Round to even number = 88) 16" size 5 needles. Join circulars making sure your work is not twisted and knit 2 purl 2 repeatedly for 12-16 rows, based on your preference for the amount of ribbing. Move stitches to 16" size 8 needles.
I have my stitches cast on to my 5 needle, but how do I Join circulars? Does joining circulars mean both, If so what size?
I am confused...lol This is the only part of the pattern that confuses me.