Standard deviation of a futures contract on 1mn chart

Hi!
I'm trying to be better at trading.
Anyone knows how to get the standard deviation of a future contract on the 1mn chart?
For example, if i want to trade the emini SP500, i think i must measure the standard deviation
based on the SP500 itself, or? i'm a bit lost. i heard a private conversation between 2 excellent traders
talking about their holy grails.
Thanks,
Cordially

I assume you are talking about MT4. The Bands indicator will show the specified Std Dev. I have used it on Forex charts, presumably it works on eMini as well.

I'm talking about ninjatrader. But i the bands indicator does the same job as done on mt4. Thanks for your help