The primary or owner account can give teammates full access to "View & Edit" "all modules" for "all properties" (How to Add a Teammate).
However, there are a few limits on what they can't have access to, including:
Adding or changing payment accounts
Payment method on the master account
Teammate accounts also receive all of the same notifications that an owner account does, with the exception of:
Changes to payment account details
The subsequent verification codes for payment account changes
Notifications for the teammate account can be managed in much the same way as an owner account. See more on that here.