Create multiple local users

CreateUsers.ps1

# Script based on http://stackoverflow.com/questions/383390/create-local-user-with-powershell-windows-vista
# Creates 30 users that are administrators and belong to the Remote Desktop Users group.

function create-account ([string]$accountName) {
 $hostname = hostname
 $comp = [adsi]"WinNT://$hostname"
 $user = $comp.Create("User", $accountName)
 $user.SetPassword("pass@word1")
 $user.SetInfo()
 $User.UserFlags[0] = $User.UserFlags[0] -bor 0x10000 #ADS_UF_DONT_EXPIRE_PASSWD flag is 0x10000
 $user.SetInfo()

 $objOU = [ADSI]"WinNT://$hostname/Administrators,group"
 $objOU.add("WinNT://$hostname/$accountName")

 $objOU = [ADSI]"WinNT://$hostname/Remote Desktop Users,group"
 $objOU.add("WinNT://$hostname/$accountName")
}

# Create 30 administrator users named user1 ... user 30
for($i=1; $i -le 30; $i++){
  create-account("user$i")
}

how do oyu run this script, I am a QA and I need to create multiple github accounts to load eth onto external wallets for testing a new block chain crypto currency rewards platform. Thanks