B1/B2 visa guidance

Hi. I’m applying for a B1/B2 visa and need guidance regarding some questions.
I’m a dentist and work in a clinic in the evening along with this I’m doing my master’s in the morning. In my present work/education, what should I list my education or my employment? Because there is only one option.

You are doing a great job!
It really requires a lot of efforts to balance your work and studies.
We are ready to help you out but it would be great if you could tell exactly in which field you are doing your master’s.

thanks for the awesome information.