HTH Worldwide typically allows policyholders to add additional travelers to their insurance plan, but the specific process and requirements may vary depending on the type of plan purchased. Usually, this can be done either at the time of plan enrollment or by contacting their customer service for adjustments after the plan has already been issued. It is important to ensure that all travelers are covered under the same policy to maintain consistent coverage and benefits. Travelers added later might have different coverage dates or premium requirements, so it is crucial to read the policy details carefully. For the most accurate information regarding adding travelers to a specific plan, interested individuals should look on the HTH Worldwide website for their current resources and contact information to help guide them through the process.