In the noun phrases 'A few members of the group' and 'The oldest member of the group', the main nouns are 'members' and 'member' respectively. Since 'members' is a plural subject, it takes a plural verb 'are'. 'member' being a singular subject takes the singular verb 'is'. So, 'A few members of the group are looking towards the camera' and 'The oldest member of the group is holding a walking stick' are the correct sentences.