First of all you need to get into the layout called 'Site Map Section List'.
You can either do this by going into 'Design | Library' – you will find it in the group called 'Site Map Section Lists' - or change the 'Select Page Type' drop down list in the 'Design' tab to 'Site Map'. Then click on one of the links in the sitemap and click the 'Navigate to Parent Layout' button a couple of times.
Highlight the 'Site Map Section Link' layout selector and click the 'Insert Block' button. The condition you want is:
<actinic:variable name="SectionLevel" /> > 2
Click 'OK' to implement the rule.
The top level section links will now be hidden from the sitemap.
You can either do this by going into 'Design | Library' – you will find it in the group called 'Site Map Section Lists' - or change the 'Select Page Type' drop down list in the 'Design' tab to 'Site Map'. Then click on one of the links in the sitemap and click the 'Navigate to Parent Layout' button a couple of times.
Highlight the 'Site Map Section Link' layout selector and click the 'Insert Block' button. The condition you want is:
<actinic:variable name="SectionLevel" /> > 2
Click 'OK' to implement the rule.
The top level section links will now be hidden from the sitemap.