Question

#define PIN_OTHER_SPI_nCS 10

in library DMD.h
1. useful for what #define PIN_OTHER_SPI_nCS 10 ?
2. Can replace this pin other than 10? because if I replace it will affect the existing display

I ask this because I want to make the pin needed by P10 so that one line with I / O Arduino, starting from pins 8 to 13.