Rotate Canvas

Hi,   I started a collage project in Adobe Express on my iPhone but would now like to make edits using my ipad.  I was using portrait mode on my iphone, and of course the project synced to the ipad as portrait.  However,  for the ipad, I would like to rotate the canvas and work in landscape mode.  Presumably there must be a way of rotating the canvas on the ipad.  However,  I've been unable to find a canvas rotate command.  I can rotate the individual image within the collage, but not the entire project/canvas.

Any help on this would be much appreciated.

thank you,

Tim