Unnecessary space after 10th number in numbered list
You want to change the tab stop and associated hanging indent in the style associated with that level in your numbering.
I recommend doing this in the Define New MultiLevel List dialog rather than through the tab settings. This is true even for a single-level list!
You can set both the left indent and the tab for your list in this dialog.
See:
- Number Alignment by Word MVP Suzanne Barnhill
- How to set up outline numbering by Word MVP Shauna Kelly
- Setting Tabs by Word MVP Suzanne Barnhill