OpenCart - Custom product field in admin panel - field

So...
I want to add a field for product's (add/edit) page in admin panel where will be a checkbox or a Boolean option (yes/no) which will be displaying to the product's front page. I know how to do the last part, and where "last part" I mean how to display it on the product page but I have no clue how I could add another field to the products admin add/edit page.
OpenCart version: 3.0.2
I would be grateful if you guys help me out to solve that :)
Thank you!

Admin panel:
1. Catalog -> Options - to create new product options
2. Catalog -> Products -> Edit -> Option(tab) - assign created before option to currently editing product

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