Matrix grouping after a second column that is not displayed

[Chris_23]

Hello community,

is there not a solution to sort the grouped rows by a hidden second column outside Tabular Editor?

Im would like to get the second figure without the project heading. However with the participants grouped by project and not all grouped under one signature. 

Kind regards

Chris

[amitchandak]

@Chris_23 , Try the next level using parallel line if that can help