MyBB Community Forums

Hello, I was wondering does anyone here know how to manually install pages? I am not wanting to use freaking Page Manager. I wanting to make it so I can have a folder for something. For example - I click on something on hot bar say its Shop then they click it, it will go to forums/shop/index.php then they can click on other things on that page that goes to what ever i choose. But on the index.php I can edit it on the site. I know I can do stuff like that with templates but I am not 100% sure on how. I am wanting to have all of the Header and ect on those pages. How would I do so?

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Does no one find this a interesting concept?

Thanks. I looked all around.. I guess I didn't look up the right key words.