1. To edit the vocabulary in a topic using pageset version 2.2.1 and above you will need to access the settings menu and the editor.
2. Select a button in the are below the tabs
3. From the tools across the top, select the arrow to the right of Edit and select Parent.
4. A joystick icon will appear in the lower right corner.
5. Use the joystick to scroll down to expose the grid where more buttons can be found or where more buttons can be added.
6. Add your buttons and content. Select exit in the tool bar across the top and yes to save.