The list of available positions where you can insert a module is controlled by the template you are using. It is possible to add new positions to a template. In this example, we will add a new position to the default rhuk_milkyway template. Here are the steps.
<div id="whitebox"> and insert a new line <jdoc:include type="modules" name="mynewposition" /> as shown below:<div id="pathway">
<jdoc:include type="modules" name="breadcrumb" />
</div>
<div class="clr"></div>
<div id="whitebox">
<jdoc:include type="modules" name="mynewposition" />
<div id="whitebox_t">
<positions>
<position>breadcrumb</position>
<position>left</position>
<position>right</position>
<position>top</position>
<position>user1</position>
<position>user2</position>
<position>user3</position>
<position>user4</position>
<position>footer</position>
<position>debug</position>
<position>syndicate</position>
<position>mynewposition</position>
</positions>
Now, when you look at your site with the "?tp=1" URL, you should see the new position as shown below:
In the Module:[Edit] screen, the new position should display in the drop-down list box of available positions, as shown below.
To create a "new" position, choose one of the names from the list of positions shown in Site > Template Manager > Module Positions.