Hi,
"area" is a way to filter your data, it's by default the scene you are in, but on complex project, scenes may not reflect anything valuable ( like compositing several scenes to form a complex levek, and so you define your area is you want.
it could be like "Level 1", Level 2" typically.
and so once you set a custom area, ALL events logged will belong to this area.
In your dashboard, you will then be able to filter by area, and create widgets where area is part of the equation to pull data in a meaningfull way for your specific game.
only set a custom area once, don't force the value again and again, set it when the user click on "play" or "next level" typically.
Bye,
Jean