To change the parameters of indicators, just follow these steps.
- Tap on any market to view its chart
- Tap the 'Expand' button at the bottom right of the chart
- Tap the 'Layers' button on the bottom left
- Tap the indicator you want to modify and then choose 'Settings'
- On 'Charts', look at the left side of the screen to see your active indicators
- Click on the 'Settings' icon next to the indicator you want to amend