The donee can only make decisions based on the authority given by the donor, from his personal welfare or property and affairs matters, or both.
The donee, however, is not allowed to make decisions on consenting to marriage, divorce, child adoption, adopting or renouncing a religion, receiving treatment for change of gender, consenting or revoking consent to treatment for sexual sterilization or abortion, registering or withdrawing an objection regarding the removal of an organ, making or revoking an Advance Medical Directive (AMD). You can find out more on LPA at this link: https://www.msf.gov.sg/opg/Pages/Guides.aspx?ParentTag=Resources