The present disclosure provides an apparatus (9) comprising a coupling arrangement (11), an input device and a control unit. The coupling arrangement (11) comprises an intermediate element (30) and a first quick coupler (31) operable to selectively couple the intermediate element (30) to a machine (10). The intermediate element (30) comprises a second quick coupler (32) operable to selectively couple a tool (15) to the intermediate element (30). The first and second quick couplers (31, 32) are each selectively actuatable to lock the intermediate element (30) to the machine (10) or tool (15) respectively. The control unit is configured to determine whether the intermediate element (30) is coupled to the machine (10) and receive an input signal from the input device. In response to the input signal the control unit restricts the unlocking of the first quick coupler (31) when the intermediate element (30) is coupled to the machine (10).
