New Zoho Desk implementation here.

New Zoho Desk implementation here.

I'm looking over the guides and I can't seem to find what i'm looking for. We are school who is wanting to replace our old IT Ticket software. We demoed Zoho desk and it looked like what we wanted. But i'm struggling on how to add our teachers. The whole concept of customer/contacts seems odd. We use Active Directory and GSuite. I'm saw something about inviting the users but then it made us create another password. And there doesn't seem to be any control over the users. They seem to be treated like isolated leopards floating around the ether. Any help is appreciated.

Goals
1. Have a Single-Signon method for our teachers to access our help center. They open a browser that uses their AD or GSuite accounts. Without having them create another password.

2. Import our users so all our agents can see them. I'm assuming this is through the contact importer using CSV. I did see something about that.