Yes you can. Follow the instructions below to hide/show the address bar (omnibox) in Wavebox.
Click on 'Settings' cog at the bottom of the sidebar go to:
Settings > Advanced > Advanced Flags > Show Address bar
Functions of the address bar:
- Search: The address bar is also the "search' bar for Wavebox. Start typing a keyword in the address bar (e.g. Trello) to quickly navigate to that app in Wavebox. It will also display results for your chosen search engine e.g. Google.
- Adding an App: the address bar is also a quick way to add a new app. Paste your URL in the address bar, and when the site you want to add to Wavebox is in the main window, right-click on it, and select 'Open Current Page as New App'. Voila, it's done!