One of the first things you will need to do, if you are a part of a larger team, is to create accounts for everyone involved.
Role-based Portal users
You can create multiple role-based Portal users based on different functional needs of your team, with different access rights. For example, A Website Manager account has full access on your website, but an Account Billing one has only to your billing and invoice information.
Multiple SFTP users
You can also create multiple SFTP users that are associated with a specific WordPress site environment (for example, the staging of 'acmeshop').
If you have a WordPress developer working on your account, besides opening a Website Manager account, and associated SFTP accounts, you can also grant database access.