Let me update the procedure with my experience:

1. install XCP-NG 8.3
2. download XenServer Driver Nvidia 16.9 (latest supported by y M60)
3. unzip driver and copy host driver (NVIDIA-vGPU-xenserver-8-535.230.02.x86_64.iso) I used winscp to copy the driver to the tmp directory.
4. download XenServer iso file (https://www.xenserver.com/downloads | XenServer8_2024-12-09.iso)
5. copy the file (vgpu-7.4.16-1.xs8.x86_64.rpm) in the packages directory
6. yum localinstall vgpu-7.4.16-1.xs8.x86_64.rpm
7. yum localinstall NVIDIA-vGPU-xenserver-8-535.230.02.x86_64.rpm
8. reboot
9. install guest driver on the VM client (539.19_grid_win10_win11_server2019_server2022_dch_64bit_international.exe)

I preferred to use yum localinstall to be able to remove or update packages faster.

I have a question regarding vGPU, why i have profiles where i can have up to 4 heads? I don't have any option to add more than one display and i don't even understand how can i use them.
Thanks for the procedure, i'm a total newbie with vGPu.