Only use files from the official Labcenter forum or verified GitHub repos (check file hashes).
The SG3524 is already present in most Proteus versions (7, 8, and ARES/ISIS) under: sg3524 proteus library download upd
Find the two main folders you will need to modify. If you installed Proteus in the default location, the paths will typically be as follows. Only use files from the official Labcenter forum
Press on your keyboard to open the "Pick Devices" dialog box. sg3524 proteus library download upd
Copy the and .IDX files for the SG3524 into the LIBRARY folder, and copy the associated .DLL or .HEX simulation model files into the MODELS folder.