When the Donor loses mental capacity either temporarily or permanently, you may act on behalf of the Donor in respect of the powers given in the Lasting Power of Attorney in accordance with the statutory prescribed procedures (refer to the Code of Practice), and you should always act in the best interest of the Donor.

Please review the following information / document from Office of Public Guardian (Singapore):

Caution: Please note the above links may have changed at the time of your reading, and you should visit the website of Office of Public Guardian for the updated links and/or information.