If this has been answered before, I apologize. I've been googling this topic for a few hours now and have come up with nothing, so maybe I'm just misunderstanding something fundamental with MS Project... anyway here goes:
In Project Pro 2010/2013, it's fairly straightforward to add a new column to your new task (see pic below).
However, in PWA 2013, I can not figure out how to add a basic column (like "Predecessors"). There's nothing in the ribbon. No options for adding columns in the "Configure Column" menu. And I've scoured through PWA Settings and Site Settings to no avail.