Tcs project onboarding

Hi everyone,I have joined tcs on aug and i got assigned to a project on sep1 ,from then I don't have anything to do,I am just going to office sitting for 2-3 hrs and coming back,they said they are waiting for client approval to make me onboard,I don't know why they are taking so much of time . What do you guys think about this,any suggestions what should I do know.