Ooo . . Ooo . . I know . . I know!!
Let's see, you place the nose guard to block the center head-up.
Then, you leave the opposing guards unmanned to either side of the nose guard.
Next, you place a tackle head-up against opposing tackles beyond these spaces, on either side.
Then, you position an end to the outside of either tackle. Facing a typical split-back offense, one end should face the tight end, while the other may be left unmanned.
Then, I would set two corners in the secondary about 7 yards off the line of scrimmage and opposite any receivers, usually the split end and flanker.
Then I suppose I would place three linebackers 3 to 4 yards off the line of scrimmage: one directly behind the nose guard, and a second and third behind each end.
Then last, but not least -- You would leave a free safety as the last defender, 9 to 12 yards behind the line of scrimmage and to the outside shoulder of the middle linebacker.
Now, that's the way I learned it -- but maybe you would do it differently.