To add a gadget to your dashboard, you can create it from scratch or paste existing gadget from bookmarks.
You can add a gadget to an empty placeholder in the dashboard builder meaning that if there is already a gadget in a placeholder you need to delete it first and then add a new one. To create a new gadget from scratch, click one of the buttons corresponding to gadget types.
To paste an existing gadget from bookmarks, click the button with a bookmark and select needed gadget, as shown in the screenshot below:
The further process of creation a gadget depends on its type: if it is a visualization, a text block, a dataset list or a news feed.