Hi @波田野 勤 • Thank you for reaching out.
Depending on what action(s) the user wants to perform in the Microsoft 365 admin center, you need to select the appropriate role(s). Please refer to Commonly used Microsoft 365 admin center roles to see which role needs to be assigned for what action.
To assign the desired role(s), you need to:
- Sign in to Microsoft 365, select the app launcher. If you see the Admin button, then you're an admin.
- Select Admin to go to the Microsoft 365 admin center.
- In the left navigation pane, select Users > Active users.
- Select the person who you want to make an admin. The user's details appear in the right dialog box.
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