The short answer is no, you are unable to isolate the volume control to each ear separately.
Adjustments for your personal hearing and any hearing loss are made via the Audeara app when you complete your individual hearing profile. This is then programmed into the settings of the headphones. For example if you have a loss in your left ear, the left ear only would be adjusted automatically to account for this. The aim of the hearing test and applied personalisation is to balance the sound between the ears. The effectiveness will obviously be dependent on the asymmetry between the ears and the degree of hearing loss present.