1)

Create Management Group

Management groups are containers that help you manage access, policy, and compliance across multiple subscriptions.

 

Any Azure AD user in the tenant can create a management group without the management group write permission assigned to that user. 

2)

Click on "Search resources"

3)

Enter text "management groups" to search

4) Click on "Management groups"

5)

Click on "Add management group"

Management groups are containers that help you manage access, policy, and compliance across multiple subscriptions. Create these containers to build an effective and efficient hierarchy

6)

Select "Create new"

7)

Enter Management group ID (Cannot be updated after creation)

The Management Group ID is the directory unique identifier that is used to submit commands on this management group. This identifier isn't editable after creation as it is used throughout the Azure system to identify this group. The root management group is automatically created with an ID that is the Azure Active Directory ID. For all other management groups, assign a unique ID.

8) Note "Management group display name"

The display name field is the name that is displayed within the Azure portal. A separate display name is an optional field when creating the management group and can be changed at any
time.

9) Click on "Save"