On the top right corner of the Portal Window, you will see the Apps button. Clicking it will open a tool tip which will redirect you to other Apps accessible through the Portal, depending on whether you have those products subscribed.
Currently, the Portal links to the interfaces for our Integration with Zendesk Guide. Unababel integrates with Zendesk Guide. There is no installation for the product, and translations are requested though an Interface tool instead. The app button will link you to the interface page.
If you would like to subscribe to this product, reach out to your CSM.