Once you have downloaded the EGS002 Proteus library, extract the library files to a folder on your computer. The library files are usually compressed in a ZIP file, so you will need to extract them using a file extraction tool.

Double-click the component to add it to your selector list and place it on your workspace.

C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\Data\LIBRARY

However, every electronics hobbyist faces a common wall: You cannot simply drag an EGS002 part from the default pick device menu. Without this library, you cannot simulate your SPWM inverter before soldering expensive MOSFETs (which often blow up during trial and error).