We don't have tabs exactly. Pressing <Tab> indents the paragraph you are
about to type. You can customize the indent distance in the "List" taskpane.
Play with this and see if you can get it the way you want.
You can also set tab stops after they are created by selecting the 4-
headed-arrow-selector box to the right of the column you want resized, and
then right-clicking on it and selecting "Resize Previous Column".