This is a really simple procedure in metatrader4 to install custom indicator. We have just need to download an indicator which we want to use in metatrader4. After downloading your file will be added in download folder. Now you have a need to copy or cut from here and go to programme files and then go to Metatrader4 and search open file. When I will be opened you will saw mql4 folder open it and now paste your indicator in the indicators folder. You have successfully installed a custom indicator in your profile.

Installing indicators in MetaTrader 4 (MT4) is simple. First, download the indicator file, usually in .mq4 or .ex4 format. Open MT4 and click File → Open Data Folder. Then go to MQL4 → Indicators and paste the indicator file into this folder.

Close and restart MT4, or right-click inside the Navigator panel and click Refresh. In the Navigator window, expand Indicators to find your newly added tool. Drag it onto your chart or double-click it to apply.

A settings box will appear where you can adjust inputs, colors, and levels. Click OK, and the indicator will display on your chart. Always ensure the file is from a trusted source to avoid platform issues.