You either have intel graphics capability or you don't, it depends on CPU and motherboard (CPU provides the functionality, motherboard provides the physical monitor connection). It's generally disabled automatically when a discrete GPU is installed.
There is absolutely no reason to use intel graphics when you have a discrete GPU, it's crap, and more accurate to call it 'hardware assisted' graphics, because it's basically entirely software, the driver just redirects the graphics API back to the CPU, which then has to deal with graphics on top of everything it's already doing.
The reason laptops tend to have and enable both is because when you're not doing graphics intensive stuff the laptop is able to use the intel graphics and completely switch off the discrete graphics chip to save power. This cannot be done on desktops.