Nvidia x server prime profiles: vga selection fails

Hi, i have two videocards

lspci -k | grep -A4 -i "VGA"
01:00.0 VGA compatible controller: NVIDIA Corporation TU117M [GeForce GTX 1650 Mobile / Max-Q] (rev a1)
	DeviceName: NVIDIA Graphics Device
	Subsystem: Hewlett-Packard Company TU117M [GeForce GTX 1650 Mobile / Max-Q]
	Kernel driver in use: nvidia
	Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia
07:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne (rev c6)
	DeviceName:  Onboard IGD
	Subsystem: Hewlett-Packard Company Cezanne
	Kernel driver in use: amdgpu
	Kernel modules: amdgpu

under AMD Ryzen 5 5600H with Radeon Graphics
and tried to select ‘intell’ graphics in Nvidia x server prime profile- it is disabled.

1). Why do we have ‘intell’ graphics option instead of general one aka integrated card
2) why it is disabled? Actually i could enable it via command line
sudo prime-select intel

but not sure whether it actually works.