Belongings Insurance How Can I Get My Brother And Sister To Share Our Mothers Belongings And Life Insurance After We All Agreed ?

How can i get my brother and sister to share our mothers belongings and life insurance after we all agreed ? - belongings insurance

our mother died a year ago, and she had no will. My brothers and I agree with everything was split four ways, it was a policy of life insurance, but only two were in the list not yet decided to share it, but now as usual. What options do I have?