If you launch the Toolbox application once you can click the icon in the top bar and go to settings and you'll see a check box to set it to launch at startup. To get the application to show up in the application menu, you need to have a
.desktop file for it (mine is in
~./local/share/applications), I'm not entirely sure how mine arrived there, but I've put it below. You'll want to replace
<username> with your actual username, and you may want to comment out the
Icon line because you may not have that file.