Ensemble allows you to create and edit tabular data inside of a text component. However, without tooltips, it isn't obvious what all of the icons mean or do.
Create a text component.
Click the pencil icon to enter edit mode.
Enter fullscreen mode.
Click the table icon to insert a table.
Click the table icon again to enter table editing mode.
Use the icons to modify your table. See the graphic below to learn what each icon represents.