No code, because this is purely theoretical and I'm trying to be lazy when making my sitemap. 
Say, as an example, that you have your "Index" page - clonable, nested - and then a "Locations" template - clonable, nested.
The Locations nest looks something like
|Locations
|
|-Location 1
| |
| |-Department 1
| | |
| | |-Subdepartment 1
| | |
| | |-Subdepartment 2
| |
| |- Department 2
| | |
| | |-Subdepartment 3
...etc, for several locations, each with 2-3 departments and subdepartments.
On the Index nesting map, it looks like:
| Index
|
| Locations
|
| Other thing
...etc., where "Locations" points to the main template for the nested Locations page.
On the "Index" map, is it possible to access all the locations, departments, subdepartments, for the "Locations" with a <cms:menu masterpage="index.php" /> command without specifying each and every one with a pointer page? If not, is there a way to do so from <cms:nested_pages masterpage="index.php">?

Say, as an example, that you have your "Index" page - clonable, nested - and then a "Locations" template - clonable, nested.
The Locations nest looks something like
|Locations
|
|-Location 1
| |
| |-Department 1
| | |
| | |-Subdepartment 1
| | |
| | |-Subdepartment 2
| |
| |- Department 2
| | |
| | |-Subdepartment 3
...etc, for several locations, each with 2-3 departments and subdepartments.
On the Index nesting map, it looks like:
| Index
|
| Locations
|
| Other thing
...etc., where "Locations" points to the main template for the nested Locations page.
On the "Index" map, is it possible to access all the locations, departments, subdepartments, for the "Locations" with a <cms:menu masterpage="index.php" /> command without specifying each and every one with a pointer page? If not, is there a way to do so from <cms:nested_pages masterpage="index.php">?