Neck shaping question

For neck shaping my pattern says

“Work 13[13, 15, 15] sts in patt, place these sts on a holder, BO 9, work to end in patt. Turn and work 1 row even.
BO 3 sts at beg of next row. Work 1 row even. BO 2[2, 3, 3] sts at beg of next row. Work 1 row even. BO 2 sts at beg of next row. Work 1 row even. BO 1 st at beg of next row. Work 1 row even.
Rejoin yarn and rep neck shaping for other side, reversing shaping.”

I have already done the first part of neck shaping but I am confused about reverse shaping. I tried it but it requires binding off at the end…

How do I do it?

You can’t bind off at the end of a row, so instead you just bind off at the beginning of the next row, even if it is a wrong side row.