The List Number style does not display by default. You can apply it via the
Apply Styles pane (Ctrl+Shift+S). Type the style name and press Apply. If
you want to change the indentation, right-click and choose Adjust List
Indents from the context menu. When you are done, click OK to close the
dialog box. To update the style, right-click again and then choose Styles |
Update List Number to Match Selection from the context menu.
In order to transfer the settings of the modified style to the attached
template, do the following: In the Modify Style dialog box (which you can
open by clicking the Modify button in the Apply Styles pane), check the "New
documents based on this template" option, and click OK. When/if prompted to
save your template, choose to do so.