How to install 2 SSD drives in a laptop that has 1 SSD

Install SSD on laptop when there is no slot for it m 2 slot laptop M2 with 10-core GPU ; M3 with 10-core GPU ; 16GB or 24GB unified memory; 512GB, 1TB or 2TB SSD; 35W Dual USB-C Port Power Adapter; 67W USB-C merlin slot Don't exceed that capacity on your installation (There might not be enough room, or electrical power capacity inside your laptop to fit maximum

mafia mayhem slot png 2 SSD drive slot, this laptop only has 1x SSD PCIe 3x4 slot and 1x SATA-3 drive space at the top left corner next to the cpu fan that