How to create a new subscription using additional user accounts under license?
Note: To get the license type log into Plesk and look at the top left corner:
In case of Web Host/Web Pro license is in use, users can create multiple accounts. Thus, it is possible to create an account and create a domain under this account, assigning it an existing webspace (subscription) to host the files.
By Plesk design, there is no functionality available for additional user accounts under Web Host/Web Pro license to create new subscriptions. Refer to Plesk documentation for additional information: Managing Additional User Accounts.
In case of Web Admin license in use, accounts management is disabled, but domains management is possible. Therefore, an additional user creates a separate subscription when creating a domain.
Vote for the feature of creating subscriptions simultaneously with adding domains when Web Host license in use at Plesk UserVoice portal.
Top-ranked suggestions are likely to be included in next versions of Plesk.