If you search for a file in Cerebro tasks and you are not intended to start working on it, but you would add its content into the current scene, then you should consider using the projects browser in Library mode for that purpose.
You can launch this browser by clicking Cerebro > Library in the menu.
The Library window has the same tabs as the Todo list window, but performs different functions. In the Todo list tab, files are worked on, while in the Library, objects are inserted into the open file.
In the Library mode, the following buttons appear under the list of files instead of the accept buttons: