Under the 'Pages' tab, select the page you'd want to add the Gallery section to. In our example, we've gone ahead and chose the Gallery section to be added on our Home Page:
Click on the '+' symbol to add a new section on your Home Page:
You will see a list of sections you can add. Click on Gallery:
A Gallery section is now on your Home Page! It's added to the bottom of the page. The editing pane for the Gallery will appear on the left pane and you should click the 'Back' arrow.
You can now arrange the order/ positioning of this new gallery anywhere on your page. Assuming we want to bring it to below the 'About Overview' section, you can simply hold down on the 6 dots circled and drag it upwards:
There you have it! Your Gallery should now be updated on the right (your website preview):