General Support: How to remove navigation menu on the left side
We need to remove the navigation menu that appears on the left column, when the items on the main menu contain subitems, but are not able to find any way to get rid of it.
Any help will be very much appreciated.
Not sure whether this will help. You may have a "Filtered Item List" Includelet on the page with the sub-menu. When you go to "Edit this page" have you looked at the Layout tab (between "Edit" and "Relations")? The Layout tab should include the "Content" Includelet as standard (don't delete this), but below the Content Includelet is there another Includelet called "Filtered Item List? If there is, it is this that is probably generating the menu that you want to remove. Having a left-hand menu is sometimes useful as it lets users know that there are other pages below - I have used therm on a few pages within my website.
You can always scratch the Includelet and if it works - all well and good. If it hasn't worked or if it has and you want to re-instate the menu then you can drag it back to the "Content".
Hope this is of some help.
In the site settings try going to Look & Feel > Theme and click Options next to the Modern theme. Then turn off Show Secondary Navigation and save settings.