Before submitting your evidence, you have the option (and in some missions, the requirement) to caption your photo or video. You also have the option to revise your caption after submission. In the Mission tab, move over to your “Completed” column. Select the mission you would like to revise, and press the three dots (…) on the right side of your team name. Press “Edit Caption.” Once you have edited/added your caption, don’t forget to press “Save.”