The Alzheimer's Society provide useful guidance in relation to future decision-making. The factsheet provides information as to how a person can take control over who makes future decisions on their behalf should they lose capacity.
As dementia progresses, the person's cognitive (mental) abilities will decline, which will affect their ability to make their own decisions. When this happens, carers, family and health and social care professionals will need to become more involved in helping the person make decisions. In some cases, others will have to make decisions for them.