Users, groups, and applications in Azure Active Directory
The Users section of Partner Center (under Account settings) lets you use Azure Active Directory to add users to your Partner Center account. Each user is assigned a role (or set of custom permissions) that defines their access to the account. You can also add groups of users and Azure AD applications to grant them access to your Partner Center account.
After users have been added to the account, you can edit account details, change roles and permissions or remove users.
In order to add users to your account, you must first associate your Partner Center account with your organization's Azure Active Directory tenant.
When adding users, you will need to specify their access to your Partner Center account by assigning them a role or set of custom permissions.
Keep in mind that all Partner Center users (including groups and Azure AD applications) must have an active account in an Azure AD tenant that is associated with your Partner Center account. User management is done in one tenant at a time; you must sign in with a Manager account for the tenant in which you want to add or edit users. Creating a new user in Partner Center will also create an account for that user in the Azure AD tenant to which you are signed in, and making changes to a user's name in Partner Center will make the same changes in your organization's Azure AD tenant.
If your organization uses directory integration to sync the on-premises directory service with your Azure AD, you won't be able to create new users, groups, or Azure AD applications in Partner Center. You (or another admin in your on-premises directory) will need to create them directly in the on-premises directory before you'll be able to see and add them in Partner Center.