In Magento, you can change the position of modules in the left and right columns of your website to better suit the layout and design of your pages. Here are the steps to change the position of modules in the left and right columns in Magento:
Log into the Magento admin panel.
Go to System > Configuration > Design.
In the “Current Configuration Scope” dropdown, select the store view or website that you want to change the module positions for.
In the “Layout” section, click on the “Edit” link next to the “Default” or “Custom Design” option.
In the “Layout Update XML” field, you can change the position of the modules.
Click on the “Save” button to save the changes.
Note: If you’re using Magento 2, you should check the documentation for more details on how to change the position of modules in the left and right columns.
Also, you can use the Layout Update XML to change the position of the modules, you need to know the name of the module and the layout handle, you can find the name of the module in the app/code/local or app/code/community directory, and you can find the layout handle in the layout folder of your theme.
