In Business Central online, the number of users is defined by the subscription and added to your tenant in the Microsoft Partner Center, typically by your Microsoft partner. For more information, see Add a new customer and Create, suspend, or cancel customer subscriptions in the Microsoft Partner Center help.
To define who can sign in to Business Central, the product licenses must be assigned to users according to the roles that they will perform in Business Central. This can be done in the following ways:
Your company's Office 365 administrator can do it in the Microsoft 365 Admin Center. For more information, see Add users individually or in bulk to Office 365.
A Microsoft partner can assign licenses in the Microsoft 365 Business Admin Center or in the Microsoft Partner Center. For more information, see User management tasks for customer accounts in the Microsoft Partner Center help.
