Can't edit logo with website builder demo

I'm working with the website builder demo. I chose a theme (one of the recreation ones that has a large header area with the sample logo being a pool with umbrella chairs) and tried to change the logo. The help says to hover over the log and click on Edit Logo. That never appears. I seem to have the hover options on the footer and widgets, but not on the logo. What am I missing?

In case I'm using the wrong term, the part of the site I'm talking about is highlighted in yellow.