Power Apps Portals admin center
The Power Apps Portals admin center allows you perform advanced administrative actions on portals. The admin center is available when a portal is provisioned successfully.
Open Power Apps Portals admin center
Go to the Recent apps section on the Power Apps home page and locate your portal.
Select More Commands (...) > Settings.
In the Portal settings pane, select Administration.
Add yourself as an owner of the Azure AD application
If you are not a global administrator and you try to manage a portal that has already been provisioned, or you resubmit the provisioning if it failed, you must be the owner of the Azure Active Directory (Azure AD) application connected to your portal.
Go to the Power Apps Portals admin center and open the Portal Details tab.
Copy the value from the Application ID field.
Go to Azure AD associated with your tenant. More information: Take over an unmanaged directory as administrator in Azure Active Directory
In Azure AD, search for the app registration by using the application ID you copied. You might need to switch from My apps to All apps.
Add users or groups as owners of this app registration. More information: Managing access to apps
This task can be performed either by a global administrator of your organization or the existing owner of this application.
After you've added yourself as an owner, reopen the Power Apps Portals admin center page.