How to see object from multiple perspectives in real time I'm trying to model a helmet, I have a reference image of the head from frontal view and side view, I would like to see the helmet overlapping both views of the head, and I want to be able to modify one view of the object and see the changes in the other view as well, something like a link between the two objects, the same way you would create a texture pattern.
You can use the Quad View mode in the 3D View, just go to View > Area > Toggle Quad View (Ctrl + Alt + Q) to activate.

To keep the views in sync you can toggle on the Box option under the N 3D View Sidebar > View > Quad View > Box.