configure Exchange Impersonation in exchange 2010

I want to configure application Impersonation for service account so that group of  mailboxes can be accessed through this service account.

Let us say, my application\service account is- skyWipro

I want application Impersonation for following group of user- sky12, sky13, sky14, sky15,sky16

Then how can I configure application Impersonation?

Please let me know all command what need to run?

I found below command but not sure how can I run these for above condition- 

New-ManagementScope –Name:scopeName –RecipientRestrictionFilter:recipientFilter

New-ManagementRoleAssignment –Name:impersonationAssignmentName –Role:ApplicationImpersonation –User:serviceAccount –CustomRecipientWriteScope:scopeName