One Sotheby’s has announced the addition of two new agents to its office in South Beach’s South of Fifth neighborhood. Amorette Robinson, a former agent at Majestic Properties and Worldwide Properties, has been named a broker-associate, as has Pier Paolo Visconti, a former broker-associate at Venegas International Group. The firm’s South of Fifth office is a combination brokerage and art gallery. — Alexander Britell