Setting an Instagram Story as a Highlight on your profile allows you to keep it visible beyond the standard 24-hour expiration. Here's how to do it:

1. Create a New Instagram Story:

Begin by creating a new Instagram Story. You can do this by tapping your profile picture or swiping right on your home feed. Add the content you want to highlight.

2. Post Your Story:

After editing and personalizing your Story, post it to your profile by tapping the "Your Story" button at the bottom of the screen.

3. Access Your Story Archive:

Once your Story is posted, it's automatically archived in your Story Archive, which is a private collection of all your past Stories. To access your Story Archive:

Tap on your profile picture to go to your profile.

Below your bio, you'll see the "Story Highlights" section. Tap on the "+" icon, which typically has a label like "New" or "Add."

4. Choose Your Highlight:

You'll be presented with a list of your archived Stories. Select the one you want to add to a Highlight.

5. Create or Select a Highlight:

If you already have Highlights created, you can add the Story to an existing one by selecting it from the list.

If you don't have a Highlight for this type of content yet, you can create a new one by tapping the "+ New" option.

6. Name Your Highlight:

Give your Highlight a name. This name will be visible on your profile, so make it descriptive.

7. Edit Cover (Optional):

You can choose a cover image for your Highlight. Instagram allows you to select a frame from the Story itself or upload a custom image.

8. Add to Your Profile:

After naming your Highlight and selecting a cover, tap "Add" or "Done" (the wording may vary depending on your device).

9. Access Your Highlight:

Your Instagram Story is now saved as a Highlight on your profile. Visitors to your profile can see it by tapping on the Highlight you created. It will stay there until you remove it manually.

More at: Instagram Story Viewer