Access the management interface of the IAM service.
In the left sidebar, select Roles, and then select Create role.
Click Another AWS account:
Type AdministratorAccess
in the search bar, enter, and tick AdministratorAccess.
Thus, you have allowed this IAM Role to have Admin access to your main account’s AWS resources.
Select Next.
AdminRole
.Note: The role name must be unique to your AWS account. Names are not case-sensitive. For example, the old role name ADMINUSER and creating a new role name adminuser will not work.