I don't have the time to create a video, but here are some basic tips: For the header that is the same on all pages, just put that header on the left side of the Master spread. For the other side, Give your chapter name text a unique style name, and then under Type > Text Variables > Define, choose Running Header and use Edit to define the paragraph style that your header will read. (for this to work, ONLY your chapter names can be set to this style) Then - under Type you can use Insert Variable to place your header .. it will look like the right-hand image, and can be styled any way you'd like. On your document pages, it will pick up the text from the Styled chapter heading on the same or previous pages until it encounters a new piece of text that uses that style.
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