Yes. You can add as many team members to your account as required.
NOTE: each user must complete their onboarding information in order to access the Business Account.
For more details see: How to add Team Members to my Account.
When you add a new user to your Business Account, you must nominate the user role type you would like that user to have. See also FAQ: How do user roles and permissions work?
Once you have added team members to your Business Account you can collaborate with them and see data related to programs they are configuring or are the sender for via the "Show Data For" data view toggle located towards the top left of each major section of the application.