Help sirdar 4593 knitted santa

I am knitting Santa’s arms. The pattern says K8, place next 7sts onto a thread ( this will form the thumb ) knit to end. How do I do this?

Knit the 8sts and place the next 7 on waste yarn. Now knit the next stitch on the left needle. It’ll close up the gap where the 7sts were and let those 7sts “loop out”. You’ll be connecting the first 8sts of the row with the last sts of the row. Later you’ll go back and pick up the 7 thumb sts from the waste yarn and make the thumb.