In the upper-left side of General tab you can find a tree view that displays the menu structure. Each item in the tree represents a menu button. Below the tree view you can find a toolbar that you can use in order to add/edit/delete the menu items that are displayed in the tree.

Menu structure
From left to right, the items in the toolbar have the following functions: add a new item, edit, remove, move the selected item up or down, move the selected item left or right in the menu hierarchy, duplicate item, open the large view of the menu structure; the last button on the right is a link to the documentation – directions for creating a menu structure.
If you want to add a new item in the menu, click on the first item from the left – a window will open.

Add menu item
The first property in the “New item” window is the item title; this is the only thing you have to insert if you want to validate item insertion. The other three properties are the URL, which is the path to the location where the button sends, the Target and the ID. The target can have the basic values: “_blank”, “_parent”, “_self” and ”_top”, or something else (for example, the value of a frame in a frameset). The ID represents another identification of the menu item; it has to be unique and it can be helpful in some scenarios, for instance when we want to know the difference between two buttons with identical parameters.
If you want to change the item’s position in the menu, select it and use the moving buttons; you can move it up or down to change the position of the item in the menu, or left or right to change the position of the item in the hierarchy.
Another option available is accessible from the third button from the right – “Duplicate Set”; using this, you can select an item in the menu (with or without sub-items), and duplicate it.
If you want to edit an item, select it and click the “Edit Item” button (the second button from the toolbar, from left to right). The “Edit Menu Structure” window will open and the parameters of the item will be unlocked for editing. Don’t forget that after you edit the item, you have to use the “Update Values” button to save the changes. The same window can be opened by using the second button from the right – “Enlarge View”.

Edit menu structure
If you want to remove an item, select it and click on the “Remove Item” button (the third one from the left); please be careful as no confirmation message will appear, and the deletion will be permanent.
The last option on the right of the toolbar is the “Help” button, a direct link to the documentation of the product.