Amorphous Cell Construction

Hello,

I have question regarding the construction of the Amorphous cell. First I have read that when we construct the Amorphous cell, Amorphous cell construction task allows us to  build a three dimensional periodic structure containing a specified number of molecules, of one or more compound. So when i am building the amrophous cell my molecules are comming out of the periodic structure. So i am not getting if Amorphous cell construct the periodic structure,  how the molecules are getting out of box? If I am doing something wrong, then please let me know how i can construct the amorphous cell with all the molecules in the periodic box. For your refernce i am puuting the images of my amorphous cell below.

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