Your tasks will be displayed in these sections depending on the dates you add to each task. So things you want to work on today will be in Today, tasks for tomorrow in Tomorrow and anything further into the future will appear in Future. Simple!
By default, your Future view will show you the next seven days but you can customise this by tapping on your avatar (profile picture) in the top left corner and editing ‘Past and Future Days to Show’. You can set the range from anywhere between seven and thirty one days.