This example sentence is a writing sample, so please add or delete content as needed before using it.
Literal
This example-sentence [topic-は], writing-style [genitive-の] sample [because-なので] need [according-to-に応じて] content [object-を] adding-deleting [object-を] doing [after-てから] please-use [request-ください].
An instructional disclaimer. 書き方のサンプル ('a sample of how to write') uses 方 (way of doing). 必要に応じて ('as needed / according to necessity') is a formal adverbial phrase. 追加削除をしてから ('after adding and deleting') uses ~てから ('after doing X'). お使いください is the honorific request form of 使う — お~ください. A standard boilerplate instruction found on template documents.