Use ICE's homepage or navigate to the ICE site/base that you would like to set as your default, and then do one of the following:
For Android
- Click on the 3 vertical dots (the menu fly out) on the right side of the URL box above
- Click "Add to home screen"
- Click "Add to home screen"
For Apple
- Click on the "Share" icon at the bottom of the screen (box with an arrow pointed up)
- Click "Add to home screen"
- Click "Add to home screen"