All functions (mast, clamp fork and bottom bucket) can be operated with the mouse.
To the stem side of the slide is permanently installed on the mast you can adjust the tines of the fork clamp. The crates or pallets, etc. are attached with the “X” button.
The function of the pile bucket is explained really well by itself (try here too simple), it can fruit “wheat rape maize barley potato sugarbeet seeds fertilizer lime wood chip compost”