Movies

[theguymadmax]

I think this is what you mean. You would need to add each folder as a new library; you can have more than one library of the same type.

Movies/
├── Family Movies/
├── Movies/
├── Holiday Movies/
└── Kid Movies/

Library 1 would point to Family Movies
Library 2  would point to Movies (subfolder)
Library 3  would point to Holiday Movies 
Library 4  would point to Kid Movies  

Note: you can not do nested folders:
Library 1:
/path/to/media
Library 2:
/path/to/media/more