help with "at the same time"

Hi, I want to start a sweater and was pre-reading but I am stuck when I see rad section below HERE IT SAYS AT THE SAME TIME…do I knit up until rows 31/32 and check the measurements? at what point I check sleeve measurements not sure I understand that. I haven’t started it yet
pattern is Lion Brand Yarn
Lion Brand® Wool-Ease® Thick & Quick®
Extra Easy, Extra Fabulous Sweater

thanks

Row 5: Knit 27 (29, 31, 33, 35), cast on 2 stitches, knit 14, cast on 2 stitches, knit 2.

Rows 6 and 8: Repeat Row 2.

Rows 7 and 9: Knit.

NOTE: Before continuing on the Right Front, read the section below that begins with ***.

Row 10: Knit 5, purl 42 (44, 46, 48, 50).

Rows 11-18: Repeat Rows 9 and 10.

Row 19: Knit to last 4 stitches, bind off 2 stitches, knit 2.

Row 20: Knit 2, cast on 2 stitches, k1, purl to end of row.

Rows 21-30: Repeat Rows 9 and 10.

Rows 31 and 32:

Repeat Rows 19 and 20.

***AND AT THE SAME TIME, when Sleeve measures 16 (18, 18, 18, 20) in. (40.5 (46, 46, 46, 51) cm), end with a wrong side row. Shape Body Next Row (Right Side): Bind off 18 stitches, knit 29 (31, 33, 35, 37) - 29 (31, 33, 35, 37) stitches. Continue to work in Stockinette stitch, keeping 5 stitches at front edge in Garter stitch, until piece measures 11 in. (28 cm) from Sleeve bind-off row. Knit 8 rows for Garter edging. Bind off.

Welcome to the forum!
Measure your knitting periodically while you are knitting up to row 32. When you reach the measurement for your size and ending so that the next row is a right side row, begin the directions to bind off 18sts etc.
https://www.lionbrand.com/products/knitting-pattern-extra-easy-extra-fabulous-sweater-1