Filters let you create custom views for your tasks based on their Spaces and Labels. If you are already logged in, here are the steps that you have to follow:
From Today’s View, click on View All Tasks on the top right corner of your screen, or from the left menu, you may click All Tasks.
Click the funnel icon from the top right corner.
It would give you this view wherein you can filter the tasks according to your preset Spaces or Labels. Once you click on a filter, it will show you all the tasks associated with that particular Space or Label.