User Activity

Hi,I I am stuck in my project, I have to activate the physical sim card.the documentation says you need "Set pin Sim_select0 to low to select the plastic SIM" but I don't know how to do it.
I recently bought "P-L496G-CELL02" and I would like to communicate in AT command with the module:here is the message that appears:Welcome to STM32-Cellular to Cloud (STM32-C2C)AT commands terminal: connection to PC with USB-OTG FS is needed.Modem is ...