Are you looking for more than the functionality already provided by Shopify? Customuzation is certainly possible through development. Please explain little more on what kind of editing you need.
Yes, it should be possible, in case you wanna try your hands at it. You can get started here https://shopify.dev/tutorials/customize-theme-add-fields-to-your-contact-form
otherwise you can look for professional help
Instead of spending time/money on development and or custom codes, I'd say using a platform which is built exclusively for tracking, sending notifications, monitoring shopify orders will save time and increase your productivity too. I strongly recommend ShippingChimp.com. They track almost 30+ shipping carriers across the globe and ingrates with almost every other CRM, order management systems. You will get a custom order tracking URL, you can put that in your footer or wherever relevant. You can customize the tracking page just like that by simple drag and drop widgets.
ShippingChimp help you to
1. Track all your packages in real-time
2. Send notifications for delivery updates and failed attempts
3. Manage returns, delivery issues
4. Your customers can track all order by entering email Id and or order ID ( Tracking page design will be matching with your store theme)
Pros: Customer support team is friendly and flexible, they help us with custom reports and integrations
Cons: Not a free tool but starts with $9 I guess ( Please refer their pricing page)