Hey Nova,
first of all, thank you for choosing Kanso!
In Kanso, if you’re using the one-page mode (the “Activate one-page website mode” checkbox in the “One-Page Website” tab of the Theme Options panel is checked) the menu is formed automatically based on the pages you create – this implies that you can completely delete any existing menus in the “Appearance -> Menus” section of the admin view in such case. Furthermore, you can control which pages get displayed in the menu by using the “Pages to EXCLUDE from one-page website MENU” section of the “One-Page Website” tab of the Theme Options panel.
If you are not using the one-page mode, please make sure that the “Automatically add new top-level pages to this menu” option is unchecked below the menu in the “Appearance -> Menus” section of the admin view; you can also remove any unnecessary menu items there.
Sincerely,
Andrii / Satori Studio