If you mean that you have CCI, Stochastic or MACD already displayed and you want to add a MA to the existing indicators displayed. Open up the Navigator tree on the left of the chart select Moving Average ( out of the INDICATORS not CUSTOM INDICATORS ) by clicking left mouse button once, Now click and hold down the left mouse button on the highlighted indicator in the list and drag the small rectangle symbol over to the displayed indicator window and release the mouse button, a box will appear , select Parameters and go to the Apply to box, next select Previous Indicator Data and click OK and there you have it.