You need to ensure that a user named User1 can create mailboxes in Exchange Online and sites in SharePoint
Online.
Solution: You add User1 to the Global administrator admin role.
Does this meet the goal? in your plan.

A.
Yes

B.
No

Explanation:

The Global administrator admin role has access to all administrative features in the Office 365 suite of services
References: https://support.office.com/en-us/article/About-Office-365-admin-roles-da585eea-f576-4f55-a1e0-
87090b6aaa9d