How to upgrade the memory in AIO M920Z | RAM UPGRADING| 10S60038AX || M92OZ i7 23.8 non-touch scree

how to upgrade the memory in Lenovo AIO M920Z RAM UPGRADING || 10S60038AX || M92OZ CORE i7 23.8 non-touch screen 8GB RAM 512G SSD WIN 10 PRO