To share a graph created between your organizations, click on "Financials" > "Components" in the left menu. Then click on the "Graphs" tab to see the organization's graphs. Click the title of the graph you want to share.
Click the icon with the three picks in the upper right, then select "Copy configuration to other organization". Then choose which organization(s) you want to copy the graph to. The graph will be immediately available in the selected organizations.
Next, click on which organization you want to copy the configuration to. Then click "Save copy".