Income tax saving on rented property

My father , a retired Govt employee owned a commercial property ready for renting out.

What could be the advisable means to save the Tax ( for eg expeceting a a rent of 1lakh per month).

Is it possible to split up the income to his wife and two sons , but the building is in the name of my Father. Or there are any other means .

The splitting up of rented income is possible legally?  ( investment done by both the sons)