Smoothning indicators

How do I add EMA to indicators such as RSI, ADX, Copock curve, etc.?

Example: I would like to add 5EMA of RSI to RSI indicator

Check this post. When you add an indicator, you get an option to add indicator on Open, High, Low, Close, or another indicator already added on the chart. 

Check this image.

The above is from Pi, but it is similar on Kite.