For different Azure AD account

The customer noticed that it would take a long time when actually operating it, so he requested a fix

Author: felixliu20230327

articles/cost-management-billing/manage/understand-ea-roles.md

@@ -138,6 +138,8 @@ Each account requires a unique work, school, or Microsoft account. For more info
 
 There can be only one account owner per account. However, there can be multiple accounts in an EA enrollment. Each account has a unique account owner.
 
+For different Azure AD account, it takes time for permission settings to take effect (more than 30 minutes).
+
 ### Service administrator
 
 The service administrator role has permissions to manage services in the Azure portal and assign users to the coadministrator role.