Pincher Plays

[learning as I go]

Hey guys,

I am new and trying to learn the pincher play. I understand the basics of it. First, is I have an ameritrade and a Zecco acct, neither appear to have the ability to give the PPO or ADX indicators.
I looked at stockcharts .com and cant seem to be able to get the RSI using periods 2 and 5. I noticed in one of your posts, #1886 refering to CNXT, it only shows the RSI 14. Am I missing something?