If you look at heading 5.4 in this table of contents you see that the page number 8 did not fit on the end of the line so it's dropped below item 5.4
and looks a bit confusing. I think in this situation 'CRISPR/Cas9' should drop to the line below which should then fill with dots .........
with an '8' at the end. Is it possible to make that happen?

See TOC Tips and Tricks.
You need to change the right indent leaving the tab setting for the page number where it is.

It would help if you display the Ruler.
If you put another screenshot up, please resize it to a smaller size. When the image exceeds the width of my screen, the text in your post scrolls off the page horizontally making it hard to read.

If you want step-by-step, post the page with the table of contents as a document.

See: https://www.msofficeforums.com/word/...html#post52345

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]