If you are worried about your family members getting into a fight for their share in the wealth after your death, then take necessary actions right away. The best you can do is appoint an executor of will Singapore and ask him to make necessary legal amendments to avoid any bitterness among family members in the future.
A professional knows all the possibilities, so he will suggest you the best way to move forward in this direction. Give it a shot and make the wealth distribution a hassle-free process.