An ngo appointed as legal guardian for mentally challenged person

The man can donate or by way of gift deed or by way of GPA OR SPA transfer the property on the name of the trust... 

What is the necessity for the deposits and house property of the mentally challenged boy to be transferred to the trust or the NGO?

If the NGO is interested in the welfare of the mentally challenged person, then they can obtain a medical certificate from the competent medical examiner to this effect, get him declared as mentally challenged and also apply for  guardianship before the District collector.

Once the District collector appoints the NGO as the guardian, then NGO can file a petition before court to pass an order to transfer rthe assets of the mentally challenged person to the name of the trust in order to take care and maintain the mentally challenged person as wel as his to meet his medical expenses.

Who can do it Sir?? The wards parents died..He is mentally retarded