You can extend the existing widgets by adding new ones.
How to add new widgets:
In the Portal app click on Add widget on the upper right side. Select an entry.
Some widgets require additional data. Enter the required values. Click on Save.
Tip: In the Drive app you can add a file as portal widget.
Tip: In the E-Mail app you can add a Portal widget.
Also see
Changing the widgets' order
Removing Portal widgets
Adding a Portal widget for social networks
Changing the Portal widgets' settings
Parent topic: Customising the Portal