How to enable RAM Memory XMP profile on the Bios of Dell ?

It's not something Dell has supported even on high-end gaming systems -- so it's just about certain it won't appear on budget business systems like the one in question.  

There's no real purpose to having XMP on a system that isn't designed for high performance.

Tell me if dell plans to add this setting in the future ?

Oh, after struggling to enable XMP at least I found the solution that Dell doesn't have this feature. I was distraught about why I am not able to enable it. My laptop is using less memory as compared to the installed memory, I would like to use all the memory that is Installed on my Laptop. 

@lisa_nichols​  i have 2666 mhz ram installed but only get 1866 mhz because of dell