Not all indicators are available on mt4 , so that you will have to add them manually.
First , you have to go this page C:\
after opening programmers files , choose the mt4 folder
Go to Experts folder
Now open Indicators folder to add the indicators
Now you are here C:\Program Files\MetaTrader\experts\indicators
You can paste the indicators here. Indicators files must be .ex4 or .mq4 and nothing else.
Now you can restart your mt4 and you will find them in Navigator.
If you want add any new templates you can add it here C:\Program Files\MetaTrader\templates
now you can paste the template in here. It must be .tpl file.
Now you can restart your mt4 and use the template.
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