2 moving averages in a separate window

 
How could I have this custum indicator:
2 EMA (7 and 23 periods) not on the chart but below in a separate window?

traderix
 
1. Open some separate window indicator (for instance MACD)
2. Drag'n'drop to MACD window Moving Average indicator, set EMA 7 and select "Apply to previous data"
3. Drag'n'drop to MACD window Moving Average indicator, set EMA 23 and select "Apply to previous data"
4. Open MA7 properties and select "Apply to close"
5. Open MA23 properties and select "Apply to close"
6. Remove MACD indicator
Reason: