Tap the plus sign at the top right on the screen.

On the bottom.

Right.

You'll see options for posting select story.

You have two different options you can use Instagrams layout feature to post multiple photos.

In a story, you'll see an option to change your grid.

Take live photos or swipe up to see your photo library.

Choose a photo for each section.

You can adjust the picture by using two fingers to move it around.

You can delete a photo off the grid by tapping the photo and hitting the trash can icon the other way.

Let's you post a Siris of photos each a separate 15 2nd story on the story screen.

Swipe up and tap.

Select multiple.

Choose the photos you want when you hit.