Grouping dimension in stacked bar chart

[tom2013]

Hi,

I'm trying a Gantt chart example I found from this Post: Files for creation of a Gantt chart

I wonder if there's a way to group the Projects as specified in another field "Type". I tried to add "Type" as a dimension, but then all the values from field "Project" will be repeated:

The desired layout is shown below:

See the file attached.

Thanks for the help!