Finding out artists on Piapro?

I want to upload some images I found off Piapro but I'm not sure how to tag that. How do I find out what alias they go under? Would it just be their username?

(I'm sorry for asking a stupid question but I thought it would be better to ask and look stupid here than to post an image and look stupid there)

Edit: Instead, can I just make the page the source? Would I use the page of the image or the url of the user?

I'm not familiar with Piapro, but the source would be the link to the image itself. That way we can mass edit. When you create an artist tag and click the ? next to it and edit it, you would put in that sample image link as well as the artist's main page. That way people can mass edit easily as well as get to the artist's homepage.

The artist's name is usually denoted with H.N. or P.N. or 管理人 (manager, at least I think that's the right kanji) or ニックネーム (nickname) or other things like that that I can't find examples of at the moment because I'm supposed to be leaving for work.