Template:Maya2017 Viewports
Viewports
By default the workspace shows one single panel with a default view of your scene (with standard grid). This panel shows your scene as viewed from the standard perspective camera (persp). When you navigate through your scene the camera you look through is actually moved.
You can use the Quick Layout Buttons (below the Tool Box) to change to the Four View. This will replace the single panel with four panels: three orthogonal views (front, side and top) and one perspective (persp).
You can change the camera that is shown in each of the views by using the pull-down menu Panels in the panel. Here you can switch between the different cameras. You can find the cameras in either the Perspective or Orthographic sub-menus, depending on the type of camera.