You can hide the mini toolbar for objects.
Procedure
If you want the mini toolbar to be hidden only when the mouse pointer is not over the object, move the mouse pointer away from the object until the mini toolbar is hidden. As soon as you move the mouse pointer back towards the object, the mini toolbar is shown again.
If you do not want the mini toolbar to be shown for a selected object anymore, move the mouse pointer several centimeters away from this object. The mini toolbar is hidden and then no longer shown, even if you position the mouse pointer over the object. It is only shown for this object again when you deselect it and then reselect it.
If you do not want the mini toolbar to be displayed as a rule, click ARIS > Options > Model > General > Objects and disable the Display mini toolbar check box.
The mini toolbar will be displayed temporarily or always for the selected object or no longer displayed for all objects.