CmdID / PowerShell / Cmdlets / Set
Set-IISCentralCertProviderCredential
Modifies the user account credentials for the IIS certificate store. Windows Server PowerShell reference
From the Windows Server PowerShell reference 1 parameter Its page in the reference
Parameters
-UserNameSpecifies the user account used to access the certificate store; this can be either an Active Directory SAM Account Name or a user principal name.