Open the item dik, if you created it previously, and save it as extruded according to the naming convention. If you did not create this model, create a model named extruded and add a random sketch (closed curve) to it.
Choose Extrude 
. The window Extrude pops up, in which you can access every option offered by this feature. (figure "Extrude")
Mark the contour of the DIK-logo or the sketch you just created. A preview of the body will be rendered, and you have to enter a start and end distance for extruding. Enter 0mm as Start and 5mm as End and confirm by clicking OK. (figure "DIK extruded")