In California, conservatorships apply to adults, while guardianships are for minors, either of whom are deemed incapacitated due to mental infirmity or youth. The assigned conservator or guardian handles personal and financial decisions for the incapacitated individual. If there’s no pre-established Power of Attorney, the court must appoint a conservator. While guardianship nominations are not binding, they heavily influence the court’s decision. It’s crucial to choose someone trusted for your minor children to ensure stability.  Failure to nominate a convservator or a guardian leaves the decision solely to the court.