This section allows you to upload photos as Lookbook, actually this is not a section that allows you to get Instagram photos but it has the same interface as using Instagram photos.
Steps: In the theme editor (Customize) > Add section > Instagram > Save.
Click on Instagram > Add block to add more image item. You can choose an image and enter the link for it.
You can enter the Heading and Subheading, choose the design for the heading, also can choose text align: center.
GENERAL OPTIONS
Layout design: You can choose Grid or Carousel layout.
With Carousel layout, you can Enable loop, config Autoplay speed
Prev next buttons: enable them and change Visible, Button style, Button color, Button size, etc...
Page dots: enable and change some styles
Config image ratio, size, position and image effect.
Items per row and Space between items for desktop, tablet and mobile
You can check this video to config them:
Please follow this guideline to config Layout, Background, Margin/Padding for the section.