Can all students sitting in even-numbered rows please move?
I would like students sitting in even-numbered rows to move
I would like students sitting in rows 2, 4, 6 (etc) to move.
「偶数の」= even numbered
「横列」= row
「移動する」= move/change
「偶数の横列の人は移動して下さい」= Can all students sitting in even-numbered rows please move? / I would like students sitting in even-numbered rows to move / I would like students sitting in rows 2, 4, 6 (etc) to move.