You can choose a default basemap, starting position, and extent in order to streamline the process of creating a mission with ArcGIS Mission Manager by customizing your settings.
Change the default basemap
To change the default basemap, complete the following steps:
- Click the Basemap dialog button to expand it.
- Select a basemap and click to apply it.
- Click Save Settings.A notification appears at the bottom of the app confirming your change. Your chosen basemap is now the default basemap and will be used whenever a mission is created. 
Change the starting position and extent
To change the starting point and extent, complete the following steps:
- Locate your starting point on the map manually or by typing a location address in the search bar.
-  Zoom to the desired scale using the Zoom tool or the mouse wheel.A red rectangle is overlayed on the map to provide reference of the maps extent. You may redraw this extent as many times as necessary. 
- Click Save Settings.A notification appears at the bottom of the app confirming your change. Your chosen zoom extent is now the default extent and will be used whenever a mission is created. 
You can change these settings at any time. You can also undo changes you make to the default map by clicking Reset to Default.