CmdID / PowerShell / Cmdlets / Set
Set-HVEAccountBillingPolicy
Use the Set-HVEAccountBillingPolicy cmdlet to modify the billing policy mapping for a specified High Volume Email (HVE) account. Exchange PowerShell reference
From the Exchange PowerShell reference 4 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the email address of the HVE account you want to modify.-BillingPolicyIdThe BillingPolicyId parameter specified the GUID of the billing policy to assign to the HVE account.-Confirm, -cfThis parameter is reserved for internal Microsoft use.-WhatIf, -wiThis parameter is reserved for internal Microsoft use.