You can’t record your activities on your HEAR yourself. The HEAR is an official Goldsmiths document and all of the activities which can be recorded on your HEAR need to be verified by an activity verifier.
Katarina Lezova, Gold Award Coordinator, is the HEAR verifier for the Gold Award.
To get your Gold Award achievement recorded on your HEAR, just let Katarina know once you have completed it. The deadline is June 30th.