In the table of contents, tab stops determine the positions of the text after the inserted paragraph number and the position of the page number. So you have to modify the relevant TOC styles (TOC 1 for level 1, TOC 2 for level 2, etc.) to include tab stops in the appropriate positions. Since TOC styles are set to update automatically by default, manually adding a tab stop in the TOC should suffice. In this case, add a tab stop at the right margin for the affected TOC entry.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional