I'm new to this so apologies in advance if this is a question with an obvious answer.

My company has multiple lines of business, and it's important we be able to manage and segment the customer data for each separately, manage the funnel for each separately, and to use the email marketing tools for each list separately.

Ideally we would also be able to set up the permissions so that certain users would only be able to see the stuff they work on.

Any thoughts?