Once you have chosen the "add products manually", click "product control" from the menu.
In the next window, select "Add category"
Enter the category name, upload an image that will be displayed when you select this category.
To order go to the newly created category - click on it.
You will find yourself in this category of the menu. You can add products or sub-categories.
To add an item, click "Add an item". This opens a window add an item. You can upload an image, title and description of the goods.
To maintain product click "Add product".