Vuzix maxReality 6.1 User Guide - Manual (Page 23)

As an example, if you create a car that is comprised of multiple objects and those
objects are all attached to a camera, they will all move together with that camera.
To attach an object to the Current Camera:

Select an object from any 3ds Max Viewport.

Press the “Add” button located below the “Attached Objects” list.
To remove an Attachment from the Current Camera list:
 Select a camera from the Current Camera list.
 Select the Attached Object you wish to remove from the list
 Press the “Remove” button.
Portals
Portals provide the ability to seamlessly move from one virtual world (VWD) to
another when triggered by a Key Object. This makes it possible to link multiple
VWDs into what appears to be a single virtual world.
Tip: Create large virtual worlds through a series of smaller VWDs, linked together through the use of
Portals. By doing so you can lower your polygon count and achieve a greater level of
performance.