You need a Page to advertise on Facebook and you must have a personal Page to create a Page.
Similar to a personal Page account, a Facebook Page also requires an account, which will be displayed below the Page name and in the Page URL.
The homepage link of a newly created public page will be identified by the page number by default. You can also create a custom account for your Facebook public page to make it easier for other users to find and remember your public page, thereby increasing the recognition of your page and improving brand awareness.
To create a custom account for your Page, you must first have Facebook management permissions for the new version of your Page. You can only change the account for your Page when you are logged into Facebook on a computer.
Go to your Facebook public page, click on your profile picture in the upper right corner, and click Settings & Privacy in the drop-down menu.
Then click Settings.
Next, in the left menu, click the name of your Page, then under General Page Settings, click Edit next to Account, then enter your custom Facebook Page account number.
Finally, enter your personal account and password to confirm the operation, then click Submit. At this point, the custom account for the Facebook public page has been set up.
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