To open and explore the stacks/ePosters from the Showcase:
Click on the title (1) to open it
Click on any Tile (2) to explore its content Click on the X button (3) to close the viewer and return to the Showcase
If the author has provided the full list of authors in their ePoster details then you can also view the full list of authors whilst browsing the ePosters on the showcase. Just move your mouse over the author's name and the full list of authors will show up.