How to add customized column in the time sheet CATS (transaction CAT2) ?

Hello,

I need to be able to add some columns in the time sheet CAT2 containing:

- the name and first name of the person (in addition of the number), in display mode in the CATS time sheet.

- a text that I will found by reading some tables and values...

Does anyone have any idea how to do so ? and if it's possible or not?

Thanks a lot in advance for your help.

Best regards

Fanny GROUX