Selective Insurance generally allows policyholders to manage their policies online, including the ability to add additional drivers or vehicles. However, the specific functionalities available can vary by policy type and individual account settings. To initiate this process, a policyholder would typically need to log in to their online account, where they can find options related to policy management. It is important to ensure that all information regarding the new drivers or vehicles is accurate and complete, as this can affect coverage and premiums. Additionally, certain stipulations may apply when adding drivers or vehicles, and these can differ based on location and individual circumstances. For the most current and detailed information, it is advisable to visit the Selective Insurance website.