"I'm lost, In general How do I create an array (using "c") in this area?"

Standard 'C' provides no support for this sort of thing, so it is not possible to answer "in general" :-(
You need to read the manual for your particular 'C' compiler.

In the current Keil C51, you specify the memory space in the array definition like this:

unsigned char xdata array[n];

See the section "Explicitly Declared Memory Types" in the manual