How to edit sidebar on category pages?
If you wish to change the Sidebar on Category Pages you should follow this direction. Go to your Admin Dashboard then Journal / Layouts / Home/column left / Category Menu and by clicking on the Edit pen button you will be able to change wished Category. Please take a look at the following picture:
Also, make sure to clear the cache from your store once you made changes. Go to System>Tools>NitroPack> Click on Clear Cache on the top right and from the drop-down click on "Clear All Cache" and you will be able to see them loaded on your front page.