How to include 2 columns under one column header in html table?

Question

I want to create an html table, which should look like this:

I know I will have to use colspan/rowspan attributes, but how? Can anyone help?

I have tried following :

<table>
<thead>
<tr>
<th>Evaluation</th><th>Approval</th>
<th colspan="2" >Points</th>
<th>Total</th>
<th>Date</th><th>Award Amount</th><th>Last Modified By</th>
</tr>
</thead>
<tbody>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
</tbody>
</table>

but is is giving me result as:

Clearly, I need to subheader in 3rd header (Points), how to achieve this?

Answer 1

Like this:

<table>
    <thead>
        <tr>
            <th rowspan="2">Evaluation</th>
            <th rowspan="2">Approval</th>
            <th colspan="2">Points</th> // <- note colspan here
            <th rowspan="2">Total</th>
            <th rowspan="2">Date</th>
            <th rowspan="2">Award Amount</th>
            <th rowspan="2">Last Modified By</th>
        </tr>
        <tr>
            <th>Tangible</th>
            <th>Intangible</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Al/GL</td>
            <td>Select</td>
            <td>col1</td>
            <td>col2</td>
            <td>col3</td>
            <td>col4</td>
            <td>col5</td>
            <td>col6</td>
        </tr>
    </tbody>
</table>

Answer 2

this is the table fullstructure

<table>
    <tr>
        <td rowspan="2"></td>
        <td rowspan="2"></td>
        <td colspan="2"></td>
        <td rowspan="2"></td>
        <td rowspan="2"></td>
        <td rowspan="2"></td>
    </tr>
    <tr>
        <td></td>
        <td></td>
    </tr>
</table>

thanks...