I have added both position on your site with script
Open templates/ja_t3_blank/etc/layouts/left-main.xml file
from
<blocks name="middle" colwidth="20">
<!--<block name="topsl" >user1,user2,user3,user4,user5</block> -->
<block name="topsl" type="spotligh" main-inner="1">user1,user2</block>
<block name="content-mass-top" main-inner="1">content-mass-top</block>
<block name="left1" main-inner="1">position-7</block>
<block name="content-mass-bottom" main-inner="1">content-mass-bottom</block>
</blocks>
change to
<blocks name="middle" colwidth="20">
<block name="content-mass-top" main-inner="1">content-mass-top</block>
<block name="inset1">new1</block>
<block name="inset2">new2</block>
<block name="left1">position-7</block>
<block name="content-mass-bottom" main-inner="1">content-mass-bottom</block>
</blocks>
About mapa, destaques position maybe you have been customize you need to turn off it.
You can refer more detail in here: http://wiki.joomlart.com/wiki/JA_T3_Framework_2/Guides#Middle_column_width and all position are defined http://wiki.joomlart.com/images/2/2b/Ja_framework.jpg