Is possible connect more users to TB?
Actually we have 1 account Gmail sync with DB to modify the meetings assignments. Is it possible to add view-only users?
Read this https://www.theocbase.net/theocbase-news/access-control.html and the Help file in TB itself (in the Help file: Settings - Cloud synchronisation). It gives detailed information, better than I can post here.
Obviously if you have one Dropbox account that you all share, TB will not know which physical person logs in to that Dropbox and cannot make a disctinction.
For accessing the database my personal preference is http://sqlitebrowser.org/
For editing templates I like to use http://brackets.io/