Before you can start using the app, Instagram will ask you to create a free account. You can sign up via your existing Facebook account or via email.
Sign up with a relevant business email that matches all your other social media feeds, so all your notifications are in one place. Keep your usernames (and brand names) as uniform as possible across platforms.
Instagram can also be accessed on the web from a computer, but users can only upload and share photos or videos from their devices.
Instagram is like Twitter, but with a few notable differences:
Profile pictures are smaller—use an instantly recognizable image (like your logo) and ensure it reads crisp and clear (avoid busy backgrounds). Your description should contain your brand slogan or tagline.
You only get one link across the platform so make it count. The bank's landing page is probably ideal.
For more information visit this page on Getting Started with Instagram: https://business.instagram.com/getting-started.
To learn more about Instagram stories for business, visit: https://blog.hubspot.com/marketing/instagram-stories.