Articles submitted to EasyChair proceedings or collections in LaTeX should use the the EasyChair class style. Articles using any other style will be automatically rejected.
If you use any of these tools to produce your article, you will need to submit two documents: a .docx file and a PDF file derived from it. For example, in Microsoft Word you can use "Save As" menu item and choose Word Document (.docx) and PDF as the formats.
The paper submission procedure is automated in EasyChair. When you submit your article, EasyChair will check that you use the right style, extract some information from your paper (for example, the list of authors) and ask you to check this information.
EasyChair uses information you provided with the submission in the published volumes. This includes title, authors, abstract and keywords/keyhrases. They can be used by others when they search for information, so please check them carefully before submission.