Anim8or doesn't have a true isometric view, but you can fake it with a bit of work. For instance, because the camera view has a default Field Of View (FOV) of 60 degrees, a standard perspective view shows similarly-sized objects to be larger the closer they are. By moving the camera VERY far away from the object(s), and reducing the camera FOV (to, say, one or two degrees), you can get very close to an isometric view.
The difficulty with this is that, since the camera FOV is now so narrow, it can become difficult to properly "aim" the camera. But, you can add a target in the middle of your scene, and set the camera to face the target. Then, you can "steer" the camera by simply moving the target around.
Hope this helps.