Hi bwjoomlart
For other blocks, you can configure via this layout settings but with mainbody part, you will need to change the code a little bit.
Depend on the layout you're using, you will need to change the associated php file in this directory:
/templates/ja_sugite/tpls/blocks/mainbody/
For example, you're using 'default-content-left' layout with main content on the left + 2 sidebars on the right, you will edit this file:
/templates/ja_sugite/tpls/blocks/mainbody/two-sidebar-right.php
Look for the classes: col-sm-8 and col-sm-4 >> change them to col-sm-12 like this:
In case that you're using only 1 sidebar on the right, you will edit this file:
/templates/ja_sugite/tpls/blocks/mainbody/one-sidebar-right.php
and edit the same way: https://prnt.sc/ryc7ru