Need help to create ninjatrader 8 strategy

hello great developer 

What I want is a tool for NinjaTrader 8 that works like the Risk/Reward tool in cTrader (I linked a video in the brief). I want to be able to drag Entry, Stop Loss, and Take Profit lines on the chart. The tool should auto-calculate my position size (lots/contracts) based on my account balance, stop loss distance, and the risk % I set (like 1%). It should show me useful info like: Risk-to-reward ratio How much I could win or lose ($) SL and TP distance in ticks or points It’s only for manual trading, no need for automation. The design doesn’t have to match NinjaTrader’s style exactly, but I want it to look and feel similar to cTrader’s tool — clean and easy to use.

PLEASE CHECK THE DOCUMENT FOR THE VIDEO { THE LINK}