I have created a strategy as per your requirement. Click on the below link to view the strategy conditions.
Kindly note, for entry/exit placing an order like this “(3rd Candle High + 1rs(Buffer))” is not possible currently. This requires a Stoploss-Buy/sell order during Entry, which is currently not supported. Streak only supports SL orders for exit after the initial Entry has been taken by Limit or Market order.
As of now, conditions can be checked on a candle closing basis, and when the candle closes an alert will be triggered. At that moment you can place a market order, or a Limit order based on candle OHLC/LTP (the candle where the condition was satisfied). To know more about placing a limit order, please refer to the following link - Reduce Slippage on Streak - #2 by Krishnendu
Please refer to the following link to learn about the Signal candle function in detail - Indicators - Streak Help
Hope this helps.