From GeoGebra Manual
Drag and drop free objects with the mouse. If you select an object by clicking on it in Move mode, you may…
- … delete the object by pressing the Delete-key
- … move the object by using the arrow keys (see section Manual Animation)
- You can quickly activate the Move tool by pressing the Esc-key of your keyboard.
- To move a slider when Move Tool is selected, you need to drag it with your right mouse button.