To create about us subpages, navigate to the Subpages see below screenshot.

Click “Leadership History” to open this page and Add the tag history_about
Headline text :I.e Leadership <b>History</b>
Content: I.e Know More About
To create Leadership History to the Subpages see the below screenshot

These 3 Subpages to add a headline, Upload Image under Files section, a snippet of content