When completing the site and page settings for a website, How do I enter Author details please? It's not allowing me to. Please advise.

hello, how can delete or modify author in footer? when i create a template i want to change that .designed by wmd for exemple

In the metadata « date » I don’t want the field : "publication" to appear And in the metadata « author » I don’t want the field «écrit par» (written by, in english) but just the author 's name to...