You will need Microsoft 365 administrative privileges.
  

1. Go to the Azure Active Directory Admin Center and sign in using your Microsoft 365 administrator account.
2. In the left menu, select Enterprise applications.
3. Search for Waldo and select it.
4. In the Manage section of the left menu, select Properties.
5. At the top of the Properties pane, click Delete, then confirm by selecting Yes to remove Waldo from your Azure AD tenant.