Section titles in the Sphinx sidebar


Is there any way to add section titles in the left menu of Sphinx documentation? I know you can do it if you use MkDocs (for example here), but is there a way to do this in Sphinx and ReSTructured text?

I want to divide my documentation into separate sections (e.g. Installation instructions, Running the program, etc.), with the titles of those sections appearing as text in the left menu.

In the update the html_sidebars as follows:

html_sidebars = {'**': ['localtoc.html']}