You can file for a guardianship of an adult if they are not able to provide their own food, clothing, or shelter, or when they cannot care for themselves and manage their own affairs. A guardianship lawyer will help you file an application with the court to act as someone’s guardian. The attorney will represent you in the hearing before a judge, as well. This process is necessary for the court to determine if the person in question needs a guardian and who should serve in this role.