Systems Help

After dealing with the death and illness of several parents and relatives and I am now trying to help friends who have both appointed me as Power of Attorney (my husband is joint Power of Attorney for one of the two), I wish that there was a document or list with explanations of all the papers that a person should have completed and where they should be stored so that the appropriate people have access to them. As the laws change, I do not think that everyone understands the nuances and from what I am seeing in the documents not all lawyers are careful to make sure that their clients have the documents needed to allow others to work in their best interests when the time comes.
Somewhere, I read that in one Scandinavian country, Denmark if my memory serves correctly, everyone is assigned a case worker upon birth. It is that person's job to help the individual navigate his/her way through the social network system when aid is needed. That is a wonderful idea. While trying to help a relative, I learned from someone at social services that some people do not collect their Canada Pension because they do not know to apply. How does this happen when the government has records about our births and in most cases where we live if we file income tax reports?
My next project is to find information about the nursing home system in Ontario. It will soon be imperative that I understand what needs to be done for my very elderly friends, 97 is a good age. These systems are certainly a challenge.
Time to start making lists and hopefully checking what needs to be done. What a learning curve!