I wasted enough time looking for this that I thought I should post to save someone else. Just wanted to create a new notebook to collect a bunch of existing highlights. It was confusing that the option didn't appear here (see first screenshot). The help page https://support.logos.com/hc/en-us/articles/360017978372-Notes-Tool was confusing too, as it just says, "You can create a new notebook by selecting the notebook view in the navigation menu, then clicking the plus icon." It could really use an explanatory picture, since I didn't know what it meant to "select the notebook view in the navigation menu." I found it eventually, and a second screenshot is included to help anyone else looking for it (see the second column from left with the "Notebooks" heading and the plus near it which appears when the thing above it is selected, underlined in orange). Again, I'm not sure why it wouldn't be in the list in the first screenshot.

