How to give my marketing clients their own accounts/areas within Hubspot?

I want to take my digital marketing company to the next level by offering my clients the benefits of a CRM. I'm completely new to all this so I decided to go with Hubspot since it's free.

I was wondering if it's possible to give my clients their own areas within my hubspot account to manage the leads that are associated with that client's leads. For example, I have 10 clients and I would like to be able to give them access to their own "area" where they can only see their leads. Is this possible?

Thanks in advance for the help.