Methods, systems, and devices are described for using a central server computer system disposed to dynamically manage collaboration between terminal devices and peripheral devices during a virtual session. The device may include a transport element that is guided along a filter drum at a radial distance from the latter on guide rails, and cooperating driver elements acting only in the circumferential direction on the filter drum and arranged in each case at a distance from one another are provided on the transport element and on the filter drum. This disposition of the pushbutton at the front end of the grip avoids accidental unlocking while the cooking utensil is in use.