$HomeFolders = Get-ChildItem C:Homefolders -Directory
foreach ($HomeFolder in $HomeFolders) {
    $Path = $HomeFolder.FullName
    $Acl = (Get-Item $Path).GetAccessControl('Access')
    # $Username = $HomeFolder.Name
    $Ar = New-Object System.Security.AccessControl.FileSystemAccessRule('jacobf', 'Modify', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
    $Acl.SetAccessRule($Ar)
    Set-Acl -path $Path -AclObject $Acl
}