$('#myTable tr:last').after('<tr>...</tr><tr>...</tr>');
//OR
$('#myTable > tbody:last-child').append('<tr>...</tr><tr>...</tr>');
BY LOVE
Note : 1- 'tblEmployee' is the ID of the table body
$.each(Result, function (key, value)
{
$('#tblEmployee').append('<tr> <td>' + value.EmployeeId + '</td> <td>' + value.Name + '</td> <td>' + value.Gender + '</td> <td>' + value.StateId + '</td> <td>' + value.CityId + '</td> <td>' + value.PhoneNumber + '</td> <td>' + value.Salary + '</td></tr>');
})
$('#myTable tr:last').after('<tr>...</tr>');
$('#myTable tr:last').after('<tr>...</tr><tr>...</tr>');
<table id="myTable">
<tbody>
<tr>...</tr>
<tr>...</tr>
</tbody>
</table>