Process camera for line

The edit menu

When you run the "Process camera for line" or "Process camera for children" command in the conversation editor, either from the toolbar (the button) or the edit menu, the toolset will attempt to automatically assign cameras to make the conversation more active.

Cameras will be chosen from the conversation's stage. Specifically, from the place properties. Make sure you set the "close", "default" and "wide" cameras for each place to an appropriate camera.