If your son is agreeing for the mutual consent divorce, the issues contemplated can be reduced to writing in the format of a memorandum of understanding to be submitted to the court along with the divorce application.
the terms in the proposes memorandum of understanding to be signed by both f them jointly should contain apart from other issues like child custody, taking care of her future education and marriage expenses, bequeathing property etc., the lump sum settlement of rs. 10 Lakhs paid/payable (including the mode of such payment) and the monthly maintenance of rs. 10,000/- per month payable every month either before the court or to be credited to her bank account directly etc., are to be properly drafted and to be incorporated without any ambiguity in the words.
The divorce decree drawn by court should carry a mention about the memorandum of understanding or atleast the contents to be referred in it.