I noticed that we can name the stockpile area (default hotkey is B). The new bench bill menu allow us to prefer which stockpile we want our colonist to haul their finished stuff to after crafting/cooking. The destination are ....
1. To best stockpile (default setting)
2. Drop on the floor
3. To stockpile number .....
4. 5. 6. etc. is to stockpile number ....
Sadly, the shelf is not on the list. The only way for colonist to haul stuff to determine shelf is to set highest priority of the said shelf to be highest because their is no way to named shelf as it is (or maybe their is a way to name it but I don't know :-[).
Thank you for reading. :)