I spent some time recently and created a fishbone diagram template . To view/use the diagram follow the link here.
Here is a short article on fishbone diagrams and how/when to use them.
The output of will look like this
1 Go to the data tab
2 Enter Effect in Cell I11
3 Modify Major Categories (if desired)
4 Select the Category from the drop down
5 Enter a cause (repeat until complete)
6 View diagram (button in upper right)
7 There are places to add additional columns of data that will not appear on the diagram