Hi Robert, sorry no there is not currently any way set up for those to start up opened.

In the future I want to improve this by making the scene browser open/close state saved in 3DM files and then you would be able to set up a template file with it opened how you want on startup, but that is not set up as of yet.

Note though that you only need to open them once when you start a new program session - their open/close state does persist if you close the browser pane and reopen it within the same program session.

- Michael