Steps:

1. Open the MT4 platform Select ‘File’ from the main menu.
2. Click on ‘Open Data Folder’ to bring up a new folder panel.
3. Select the ‘MQL4’ folder, followed by the ‘Experts’ file.
4. Drag and drop your EA file(s) into this folder.
5. Restart MetaTrader 4 for your changes to take affect.