Using theWord Module layout Sets theWord does not just read the particular modules (books) you have in its folder. These books must be registered and added to a "Module Layout Set", which one of these must be chosen. So you can separate, slice and dice your library as you wish, or put them all into a single library. But the module may be invisible if you do not correctly set this up on adding a new module. This class explains all of how to do this.