1.  Go to Sales \> Orders \> Customers.
2.  Create new customer and set **Picking Internal Note** and **Picking
    Customer Comments** in *Sales & Purchase* tab.
3.  Go to Sales \> Orders \> Orders.
4.  Create new sale order with storable products and select customer
    created before.
5.  Go to *Other information* tab.
6.  Fields **Picking Internal Note** and **Picking Customer Comments**
    will be filled with values from customer.
7.  Can update the **Picking Internal Note** and **Picking Customer
    Comments** you want to.
8.  Confirm the Sale Order and go to the created picking.
9.  On the "Comments" tab, you will see both the internal note and
    customer comments.