<#Import csv in the following format

Hostname,ClientID,IPAddress
TEN-PC01,70:B3:D5:A7:71:01,10.1.1.150
TEN-PC02,70:B3:D5:A7:71:02,10.1.1.151
#>
$impCSV = Import-Csv -Path D:\BulkImport\PC-List-IP.csv -Delimiter ','

#IP of DHCP Scope
$Scope = "10.1.1.0"

#Scope ID
$GetScope = Get-DhcpServerv4Scope -ScopeId $Scope

#Boot Image path for WDS
$boot = "boot\x64\bootmgfw.efi"

Foreach ($imp in $impCSV)
    {
    #Hostname
    $hn = $imp.hostname

    #MAC Address
    $mac = $imp.ClientID.replace(":","")

    #IP Address of client
    $ip = $imp.IPAddress
    
    #Add clients to DCHP Reservations  
    Add-DhcpServerv4Reservation -scopeID $Scope -Name $hn -IPAddress $ip -ClientId $mac
    
    #Add clients to WDS Pre-staged
    New-WdsClient -DeviceName $hn -DeviceID $mac -BootImagePath $boot
    
    }