The term "Clients" in TimeTap refers to the people who have either scheduled an appointment with you or who you have created an appointment for. In your business, they may actually be called students, patients, mentees, customers, members, etc. However you refer to the people who are booking with you, just know that in TimeTap we call them "Clients".
There are a ton of things you're going to be able to do with clients, and this section of our documentation does its best to touch on them all including:
Every client that you add to your TimeTap account has a Client Profile. You can navigate to a Clients Profile from the Client List. The Client Profile consists of the clients contact details, client details for staff user only, any internal notes, and the client's appointments: