You can split them up by including them in both columns, but it takes some customization:
1) Make a copy of menu_customer.tpl and call it menu_customer_info.tpl
2) Open menu_customer.tpl and find:
Code:
{section name="cats" loop=$xcmsNavigationCategories}
After Add:
{* Do not display the info category *}
{* Change X to the numeric id of your info category *}
{if $xcmsNavigationCategories[cats].categoryid ne X}
Find:
BEFORE add:
3) Open menu_customer_info.tpl and find:
Code:
{section name="cats" loop=$xcmsNavigationCategories}
After Add:
{* Only show the info category *}
{* Change X to the numeric id of your info category *}
{if $xcmsNavigationCategories[cats].categoryid eq X}
Find:
BEFORE add:
4) In your home.tpl put this code where you want the info block to appear:
{* WCM - xCMS *}
{if $active_modules.WCM_xCMS}
{include file="modules/xcms/menu_customer_info.tpl"}
{/if}
{* / WCM - xCMS *}