How to define a minimum height for my game zone and why?

Nicolas Jacquet -

In order to maintain uniformity from one step to another, you can define a minimum height to your game zone. That way, if one step has less content than another, the height of the game zone will remain the same.

How to
1. Go to the "Look & Feel" step of your campaign;
2. Click on the "Change Look & Feel" button;

3. In the "Game zone" section, set a minimum height.