The pause menu carries an Options button. Open the main menu with U, then select Options.
The screen holds up to three sections: This Player, Resistance and Server. A section appears only if it holds a setting you may change. A single player, or the host of their own game, always sees every section that holds a setting.
This section is empty in the current version. It holds a place for settings that stay on your own machine. It appears once a future update adds one.
This section needs officer status. It holds settings for your faction. No setting lives here yet.
This section needs the admin role. On a dedicated server, only an admin can open it. In single player, or as the host of your own game, you always see it.
Two settings live here.
Automatic saving. A toggle that turns the campaign save timer on or off.
Time between saves. A slider from 2 to 60 minutes, in steps of one minute. It sets the gap between two automatic saves.
A change to either setting applies at once. No restart follows. It reaches every player on the server, and a value you set stays after a save and a Continue.