Question

If I was appointed as an agent to sell someone’s leavened food, can I do it through the internet?
That is, from what I remember from in-person sales, there are two versions of the document: one for someone selling his own leavened food, and one for someone selling the leavened food of the person who appointed him. By contrast, on the sale websites I didn’t find a version for a sale carried out by proxy. Would it work simply to fill in the person’s details in his name?