Use the snippet below to add sidebar support to the WordPress Velux Theme.
This theme has two sidebar so you’ll need to choose which sidebar you want on your courses or lessons.
If you want sidebars in the first sidebar, use the snippet as is. If you want the second sidebar, delete line 10 and uncomment (delete the two slashes) at the beginning of line 11.
This code can be added to your themes functions.php file or can be added using a custom plugin.