How to change the camera rotatio axis?

[Daniel Pérez]

I would like to change the camera rotation axis but I can't find where to do it.
I have to move the camara forward from the head driver to set the correct point of view for my settup, no problem in doing that, but when I look left or right the camera rotates upon itself and I want it to rotate around the driver head axis instead. In the .cam file I have not been able to find anything to do that.

Does anyone know where it can be done?

Thank you