Index -> Navigation -> Preferences -> Auto-Pass Prefs.

Auto-Pass Prefs.

This area lets you control the way the game automatically passes - or not - when you have nothing to play. If you would like the game to automatically pass for you if you have no card to play or action to take at any one of the listed points in the game, check "Yes" for the appropriate phase or trigger.

For example, if you wanted the game to automatically pass if you have no actions you can take during the maneuver phase, but to wait for you to manually pass even if you have no actions to take during all other phases, select "Yes" next to "Maneuver Phase" in the Phase Actions box, while leaving all other phases set to "No."