Sendible offers different account types that can be used depending on the structure within your team. The account types are:
Admin - Admins have access to all user accounts, meaning that they have the option to switch over to any other account at any time, change settings, set permissions, billing etc.
Team Member - Team members in the same user hierarchy, by default, have access to each other's accounts to collaborate on tasks. They do not have access to admin features, these include setting permissions, billing, change company information etc.
Client - Client type account are designed to be used by your client, they do not have access to any other account by default, only their own unless manually given access.
All you need to set up an account is an email address, username and password and then to select an account type from the options mentioned above.
You can also give specific access to user accounts if the above options do not suit your needs.
Please visit this link for details on how to set up users and manage user hierarchies.