I searched on the web. I read every manual, I watch YouTube videos for setup face detection, and in all of them they have a "Database" menu in the AI section like this:

In my NVR menu, this is missing:

The NVR and the IP Camera are with the latest firmware.
- NVR Dahua DHI-NVR4116-4KS2/L:

- IPC-HFW5449T-ASE-LED-0360B

Thank you in advance for your kind help.
P.S. I searched in the forum for an issue like mine but I didn't find it.

In my NVR menu, this is missing:

The NVR and the IP Camera are with the latest firmware.
- NVR Dahua DHI-NVR4116-4KS2/L:

- IPC-HFW5449T-ASE-LED-0360B

Thank you in advance for your kind help.
P.S. I searched in the forum for an issue like mine but I didn't find it.