I have a client who needs to have the ability to confirm

I have a client who needs to have the ability to confirm appointments as they come in. While I think I am comfortable getting this set up, I want to be able to allow this user to see ONLY the appointments section of the Wordpress dashboard. Is this possible?

I want to confuse them as least as possible and if they could just click a link in the email for confirmation request and see ONLY the appointments+ options that would be ideal. Is this possible and if so how?