To compile a comprehensive guide on how to do that, I have decided to prepare this post so that all that might also need it could access it too. See: How Can I Close My Facebook Account Immediately?
If you’re the admin of a page on Facebook, you can edit the page category. Your Facebook page’s categories appear below your Page’s name in the search and can help people find what they’re looking for.
According to the Facebook Help Center, different features may be available based on the category you choose for your Page. Try to be specific when choosing a category.
A typical example is choosing “Italian Restaurant” instead of “Restaurant.” You can choose up to 3 categories to let customers know more about the specific services you provide. See: I Forgot My Password For Facebook
How to Edit Facebook Page’s Category
To edit your Page’s category:
1. Click About on the left side of your Page.
2. Click Edit next to Category.
3. Type in up to 3 categories and select an option from the dropdown list that appears.
4. Click Save.
N/B: There’s no limit to the number of times that you can edit the category of your Page. If you don’t see a category that describes your Page, choose the closest available option.