 In this video we will show you how to insert a mould into the ear. This part of the mould goes into the ear canal, and this part of the mould sits underneath this fold of skin. So guide the mould into the ear canal, and also the top part of the mould underneath the fold of skin. Once the mould is in place, simply hook the hearing aid on top of the ear. This is how you insert a moulded hearing aid.