I keep seeing this image on the internet, of President-elect Biden standing at a lectern that looks a bit like the president's.
I saw this picture of President-elect Biden in the USA Today, and the caption said: President-elect Joe Biden delivers remarks at The Queen in Wilmington, Delaware, on November 9, 2020. I do notice that he has a second American flag to fill the space of the absent flag of the presidency, and a gold seal in lieu of the presidential seal.
It strikes me as a new development that before taking office he should have constructed an office in the theaters that he visits, from which to address the press. When we say "the Office of the President” I suppose that we mean not a room containing office furniture but rather the role of the president, the collection of powers and responsibilities of the president as defined in the Constitution, by comparison to which there isn't really an "Office of the President-elect."
Has any previous politician done this?