Permissions can be passed in when Facebook is logged in. Users can inversely choose these permissions. However, when you log in Facebook again, you cannot reversely select them · MSDK Developer Reference
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How to Request manage_pages and publish_pages Permissions in Facebook Application? - Magefan
How to Request manage_pages and publish_pages Permissions in Facebook Application? - Magefan
How to Request manage_pages and publish_pages Permissions in Facebook Application? - Magefan