You can access the Menus page by going to "Appearance" -> "Menus" on the left-hand menu.
This page allows you to create and control Wordpress menus, it does not allow you to control the Category menu, as this is controlled from within Khaos Control.
If your Theme does not support menus, as it does not have any defined, then you can still use Wordpress menus, by using a "Custom Menu" widget.
1. Give the menu a name.
2. Click the "Create Menu" button on the right-hand side.
3. On the left-hand side of the screen there is a section with all the Pages, Static Content, etc that you can add to the menu.
a. To add an item to the menu, tick the check-box next to the item and then click the "Add to Menu" button.
NOTE: You can add multiple items to the menu by ticking the check-box for each of them, and then clicking the "Add to Menu" button.
b. To change the type of item, just click on the title of the item type you want to add, and this will expand the section so you can select items.
c. You can add a custom link to an external website by clicking on "Custom Links", then adding the URL and the text you want the menu item to show as, then click the "Add to Menu".
d. You can remove a menu item by clicking the down arrow on the appropriate menu item, to expand the menu item details, then clicking "Remove".
4. Once items have been added to the menu, you can change the order of them by clicking and dragging the item to its new position.
5. If your Theme has menu locations defined, you can select which location to show the menu in by ticking the appropriate check-box for "Display Location".
6. Once your menu is complete, click the "Save Menu" button.