lastly, the ngo must proof of being active and operational and declare responsibility for all and any medical and hospital expenses for the volunteer during his or her stay in Brazil, even though the volunteer is also required to show proof of health insurance.

there is no way to transition from a tourist visa to a volunteer-visa while remaining in brazil - the visa can only be issued outside brazil.

an authorized individual may submit materials on behalf of the applicant, but the latter must return to his/her home country, receive the visa at the brazilian consulate, and re-enter using the new visa.