You can set blog layout instead of portal in the template parameters. In the blog layout the sidebars are on the right, like in the example below

Custom HTML module8

This is the 1st module in module position user2. Its width is set by the "Bootstrap size" parameter in the module settings. This setting is the number of columns in the 12-column grid.

Custom HTML module9

This is the 2nd module in module position user2. Its width is set by the "Bootstrap size" parameter in the module settings. This setting is the number of columns in the 12-column grid.

Custom HTML module10

This is the 3rd module in module position user2. Its width is set by the "Bootstrap size" parameter in the module settings. This setting is the number of columns in the 12-column grid.

Custom HTML module11

This is the 1st module in module position user7. Its width is set by the "Bootstrap size" parameter in the module settings.

Joomla template by a4joomla