The definition of a brainbox is accessible here.
From the chart tab
On your graph, click on the brainbox icon:

Click on a folder and on the icon" Add brainbox" (if you want to create another folder, you can click on"Add folder" - the icon just on the left of the icon "Add brainbox").

Write the name, the description (not required) and the sharing settings, then click on "Ok":

To check if your graph is in the brainbox click on the brainbox icon (1), you can see the latest graphs that have been saved in a brainbox.
You can also click on "open" (2) to open the main brainbox page:
From the Brainbox module
Click on a folder and on the icon "+" and" Add brainbox" (if you want to create another folder, you can click on"Add folder", the icon just after "Add brainbox").

Write the name, the description (if necessary) and the sharing settings, then click on "Ok":
