When I open the composer I can't see any obvious means of changing the page setup (size or orientation). QGIS 2 had a tab for this.

  • Ack :) I searched on page size so it never came up. Is there a way to add something to the so it gets better coverage in searches? Should I delete my question? – Russell Fulton May 2 '18 at 20:31

You need to right click anywhere in the composer window this pops up the option to bring up the page properties dialogue

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