I hardcoded a page to use for a Wordpress-Site I'm managing but then my boss decided that said page needs to be editable from the backend for our customers.
Long story short:
How do I add editablity of certain fields as a option in the backend?
It has to stay persistent even after an update so I'm reluctant to tinker with the wp-admin folder.
edit02: Let me rephrase my question a bit: What do I need in terms of files or which files do I have to edit to get an additional option in my backend that lets me change an image or the contents of a textbox instead of hardcoding it?
Yes, the site has a custom template for that which is why I can't just use the image from the post itself.
edit03: As apparently nobody here know how to code a Wordpress Backend, let me try again. I want to add options for a certain usergroup to give them the ability to edit my hardcoded pages: You know. Let them change the images on the site, leaving their positions intact, changing some text in the header. Basic stuff.