Create a new page and give it name “About Us” and select Page Attribute settings that are showing on the right side and select About Us Template and click on publish button.
To add an About Us Template, Go to admin dashboard >> Pages >> Add New. Enter page title and select an About Us template. Click on right side publish button to save about us template.
Please go to Appearance >> Customizer >> About Us Template and set Caption Tile, Title Color, Image Title, Hide/Show Team Section and also you can customizer about us callout section from here.