A panel that will carry a mounted television is a different object from a panel that is only decorative, and the difference is decided long before the carving.
A flat-screen bracket concentrates a great deal of weight into four small points, and that weight acts as leverage - pulling at the top and pushing at the bottom - every time the screen is tilted or nudged. A framed-and-panelled back with thin floating panels would not take that; the fixings would pull through.
So where a screen is to be mounted, our artisans build a solid backing block into the panel behind the bracket position, laminated into the panel's thickness and reaching between the two full-height stiles. The bracket then fixes into solid timber that is carried by the frame, not into a panel that is only spanning a gap.
Which means we need to know two things before the panel is made: whether you will mount the screen, and roughly where. A backing block cannot sensibly be added afterwards, and a panel drilled without one is a panel that will eventually let go.