To use the "Additional Information" feature, navigate to Your Profile and select "Edit Your Details." In this section, users can fill out fields for Biography, Country, Interests, and more. Some users experienced issues accessing this feature, prompting questions about whether the problem was browser-specific or related to the mobile app. Clarification was provided that the functionality is available on desktop browsers. Ultimately, users confirmed they were able to locate and use the "Additional Information" section successfully.