1. Download indicator (anyone you selected for MT4) from Codebase.
2. File - Open Metatrader - MQL4 - Indicators
3. Place indicator to indicators' folder.
4. Compile indicator or restart Metatrader.
5. Open any chart, and attach indicator to the chart (how to attach - read this page).

- www.metatrader4.com
How to Download free Indicator from the MT4 website list of indicators?? and How to instal it on Metrader MT4 platform?
Please help, thank you