You misunderstood.

Moving can only effectively be done with follow. This is why generally Multiboxers only have 1 melee character.

The only way you might be able to get around it is to run up to the mob, begin attacking it and then spin 180 degrees and move backwards through the mob. This way your second character should be within melee range. It does work it just takes practice. Its most definately not viable for PvP though.