Click or use the shortcut
⌥ alt +
2 to open the menu.
Click on the node you want to open.
If you have difficulties finding a certain menu item, just use the search field in the menu.
Type in the name of the feature you are looking for (e.g., “New Sales Order”) and click on the link to open the window.
To view the entire menu, click on BROWSE WHOLE TREE.