issue with autoconnecting BPMN objects

[cfduncan2]

Trying out Draw.io for BPMN diagramming. I saw a tutorial video that showed a method of connecting shapes where you drag one shape to hover over another, then move to hover over a blue arrow on the side, and then drop the shape. This automatically connected your shape and aligns it next to the first element. That's not a great description, so this is what I’m talking about: https://youtu.be/gFi-zkMXyxs?t=194

The issue I'm having is that I am not seeing this option for BPMN tasks. Seems to work for every object type in the video, but this is what happens when I try: http://recordit.co/QqLloIjKbZ

The task shapes don't get the circular blue arrow that allows the auto connection (as seen at 3:32 & 4:07 in the tutorial). Is there a setting I'm missing?