How to open a map in a regular league?

With this new update, when I go to my map device, it doesnt show where to place the map to open it. The atlas is all white without any place to place a map.

Ok, its hard to find, but found it. Its not self explanatory, you have to find the little dot on the atlas to place the map there.

Also, I want to play dunes, do I have to play each little map until I find dunes? sigh

Yes you would need to navigate to Dunes to be able to play it but it's pretty close to spawn.

Start at the bottom right with "Promenade" -> "Fungal Hollow" -> "Summit" -> "Dunes"