Tooltip for column headers in matrix and tables

[Vicenteajm1]

Very good morning, it is important that 

 update 

 Please provide information on tools for column headers in matrices and tables...since it can be done with Zebra and with Deneb, but one is a paid tool and another programming tool, which implies increased development time. 

Add a simple option in JSON, where measures can be inserted or associated as a description of each column and not only serve for the values ​​of the visual objects described above.