The relative position setting is subjective; it helps you to manually adjust the position of the banner. The relative position setting will help to adjust the new position corresponding to the original position of the banner.
For example, the original position of the banner is 0 pixels and in the setting, you set 10 pixels the banner will be set 10 pixels away.
Note:- The value you set will be considered from all around four direction.
You can adapt yourself for more information or watch the video below.