You can create any kind of sections for your day that you want with this handy strategy.
Turn it on and go to the strategy settings to set up your custom sections:
Your day now has your custom sections:
Setting the default section
In the settings you can decide which section is the default section. This means that any task that is not specifically created inside a section or has a section assigned goes there.
You've turned on the strategy but still can't see the custom sections?
Since the item grouping isn't synced to the cloud you'll have to manually set the grouping on each new device. To do that, in your main view, click on the "Group by" icon and set grouping to the "Group by custom section".