Group and ungroup Feature Types in reader groups in the Navigator Pannel

Hi,

 

 

I would like how to group and ungroup feature types from reader groups in the navigator pannel

 

 

I have a 150 shape files in a work bench split over about 40 groups (Readers), however I would like to alter the readers are grouped without breaking the work bench model. 

 

 

Presently they are in the groups based on what shape files i selected to add a single time

 

 

Thanks

 

Matt