How to add datafeed like JCI (Jakarta Composite Index) or other stock?
You may add a Jakarta Composite Index and any other financial instrument listed in Yahoo Finance as described in the above message.
Go to Yahoo Finance, search for a stock, save historical data as CSV, restart AE Financial and select that in the instruments list.




If the stock is provided with Metatrader 4 broker you use, just select MT4 as data source and pick up a stock in the drop-down instruments list.
If you are not familiar with Metatrader 4, consider these topics:

Installing and configuring Metatrader 4
"Internal" Metatrader. How to start using that