DFRobot Beetle & MAX7219 8x8 Matrix wiring?

Hey all - I'm trying to wire a MAX7219 kit to a DFRobot Beetle and I'm not sure I'm hooking things up correctly. From what I've read, this is what I have so far:

MAX7219 ===> Beetle
VCC ===> 5V
GND ===> GND
DIN ===> MOSI
CS ===> ?
CLK ===> SCK

I'm not sure where to wire CS on the Beetle.

• SKU:DFR0282
• Ardunio Leonardo (1.8.15)
• What is the intended function of your project?: Shifter gear display for IRL car.
• Are you using any libraries? Not fully decided yet, I'm running test code to make sure its wired properly and functioning, from https://lastminuteengineers.com/max7219 ... -tutorial/

Thanks for any help. I'm new to all this so go easy