A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. A completed and signed Participant Information and Medical Care Authorization form is required for each camp a child attends.How to fill out the Grandparent Medical Consent Form for Minors? In Pima: Ask the court clerk for the modification of third party and grandparent visitation forms. Comments: QUESTIONS. Forms, digital trainings, resources, and relevant information for filing for an adult or minor guardianship or conservatorship in Arizona.