Hey @Ansu8371 ,
To achieve this you would need a ForAll Loop. Be Aware, This will go through every Record in your table and update it
If you ant to do it only for some, we will need to adapt the formula.
ClearCollect(colAuto,Automobile);
ForAll(colAuto,
Pacth(Automobile,
ThisRecord,
{Department:Switch(ThisRecord.DPT, "HR", "Human Resource","CLM", "Claim", "MKT", "Marketing", "FIN","Finance)}))
Let me know if you have any questions.