Installing an Expert Advisor in MetaTrader 4
Copy files into MQL4/Experts and attach the EA to a chart.
Open MetaTrader 4. Choose File → Open Data Folder.
Open MQL4 → Experts.
Copy both the .mq4 source file and the .ex4 compiled file into that folder. Copy any extra files only if the product documentation says they are required.
In Navigator, right-click Expert Advisors and choose Refresh. If the EA does not appear, restart the terminal.
Drag the EA onto a chart. Review inputs. Enable AutoTrading only after demo testing.
This is general platform guidance. Follow the product QUICK_START.txt if it specifies a different path.