I believe this would refer to the Reichstag Fire decree? Decisions taken under the emergency decrees were supposed to receive Presidential supervision and approval (in fact, the authority under Article 48 flowed from the President's office alone), but Hitler was able to take action without real consultation.

How was that possible? Hindenburg was surrounded by a coterie that included Franz von Papen (the Vice Chancellor), Oscar Hindenburg (the President's son), his secretary Meissner and the defense Minister von Blomberg. In 1933, Hindenburg considered his work largely done, and his coterie convinced him that he could leave Germany in their hands. Hindenburg was after all within a year of his death; he had just served eight years as President after an attempt to retire. He was tired and wanted to believe he had accomplished his life's work.

Meissner, Oscar and Blomberg, especially, and Papen to some extent, essentially took up the President's powers, seeking and obtaining the President's signature when necessary. They were mostly sympathetic (and usually sycophantic) and did what Hitler asked of them - generally, the great exception being around the time of the Night of the Long Knives, when Papen and Blomberg made some failed moves to check Nazism.

What page in The Coming of the Third Reich?