We're developing a desktop application for accountants and lawyers. One of its feature is document management.
There are several actions users can do about documents, so we are doubtful about how many toolbars it's good to use.
On the Image 1 you can see two different toolbars; the first one is about actions dealing with the whole windows, while the second one is about actions user can do only on documents (listed in the grid).
On the Image 2 you can see a unique toolbar that merges all the buttons, dealing with the single documents or not.
Which solution is the best, according to the usability rules? We'd like to make a choice consistent with the other features, so if we choose the 2 toolbars solution we will apply it even for the invoice management, cheques management, and so on.