for some tours it would be very helpful if you could set a camera height so that the customer can always move through the tour at head height.
Do you mean to disable all the navigation that changes the height of the camera (Q, E, PgUp, PgDown, double finger scroll on touch screen devices)? If the customer doesn’t use these navigation actions the height of the camera is determined by the height that you set in views, so can you control it.
something like this, but I rather imagine a fixed distance to the floor. The camera can then simply be defined with a height specification, e.g. 165cm height. When you get to a staircase, the camera height increases directly with the height of the stairs. Possibly this would be a special additional walk camera with a gravity and collision?
It sounds like you can achieve something like this with the camera Auto climb setting: https://help.shapespark.com/hc/en-us/articles/360009384478-Camera