Hi Sharma,
if you go for config via table V_T510S then there is no any standard approval process. The captured over time will be transferred directly to ZL and which will be transfered to payroll.
if you realy need this approval then you have to do ABAP workaround to download overtime wage type with employee no including the checkbox and the correction column then this approved overtime ( which check box is ticked) and if there is any correction in the correction column, After this , each admin can upload this hrs and wage type can upload into infotype 2010
Note. You should not transfer the wage type to payroll via ZL.
This is how I managed one of my implementation.
but my suggestion is to go to CATS implementation.
Regards,
Dinesh