How can I have the page number at the bottom right of the index line?

How can I make sure that, in the general index, in two columns, the page number is placed at the bottom right of the line? and, perhaps, the title of the chapter is centered so as to be more evident? If I try to push “Align Right” in the tab, the page number disappears.

example:

(inline display fixed by ajlittoz)

Impossible to give advice on a screenshot. Solution is in the paragraph style configuration. Attach a sample file to your question.

Per quale motivo si scrive e si risponde in inglese? Siamo sul sito della lingua italiana.