Optional: How to create a Global Admin in M365
Create the admin
As an administrator log on to: https://admin.microsoft.com/
Fill in the form with the relevant information.
You can leave the .onmicrosoft.com domain as it is or choose your domain name from the drop-down.
In case, you want to have a full Organization backup or a Teams backup, you need to assign the free Teams Exploratory license.
Teams Exploratory License
This is a free of charge license to use Teams. This is enough for the Veeam user to work with the backups.
Eligible users can sign up for the Teams Exploratory experience by signing in to Teams from the desktop or web (teams.microsoft.com). When they sign up, they'll be assigned this license automatically and the tenant admin will receive an email notification the first time someone in your org starts the Teams Exploratory experience.
In case, you need Teams backups, in the admin center, choose the Licenses and apps menu and choose Microsoft Teams Exploratory.
Alternatively sign in to teams.microsoft.com with the user you'd like to use to start the usage of the Exploratory license.
On the Optional Settings page, click the Roles section > choose Admin center access and choose the Global administrator access right:
Click Next to finish the wizard.
It takes a few minutes for O365 to assign the proper access rights to new users.