The naka-bukuro should be placed in the koden-bukuro which has been opened on the table so that the front side of the koden-bukuro (the side on which the address, such as "Goreizen", has been written) faces the surface of the table (or the rear side of the opened koden-bukuro faces the ceiling).
中袋は、香典袋を裏側が手前になるようにして開け、御霊前などと書いてある表面を伏せて（香典袋の裏側が天井を向いて開いている状態）置く。