The corresponding author's name should be followed by an asterisk, and the corresponding author's e-mail address should be put below the first page of the document. If there is only one author, the asterisk must be omitted. The corresponding author is not necessary to be in control of the primary author. She/he is, however, responsible for sending letters on behalf of absent authors.
In addition to the above information, it is also important to indicate in the paper itself the corresponding author's affiliation when this differs from that of the main author. This can be done in several ways: by using superscripts or subscripts, by enclosing the name in parentheses, or by indicating the correct affiliation in the text itself. For example, "Affiliation with University A" or "Affiliated with University A".
Finally, if there is a correspondence address for researchers who are not members of the main author's institution, it should be mentioned here too. For example, "Institute B may be contacted at c/o Author's Institution."
These are only some examples; there are many other ways to refer to people involved in the research process. It is important that you identify them accurately!
As well as the author list, there is also a footnote list where you can include details about funding sources for your work, as well as any other relevant information.
The corresponding author is frequently also the final author, however she or he might be put first, or even in the middle of the author list. Each author accepts responsibility for the paper (or should). If you want to correspond about the paper, you should contact the corresponding author.
Sometimes more than one researcher may have contributed to an article. In this case, all authors are considered contributors and each one has a right to be informed about the status of the paper.
If there are multiple contributors, it is common practice to list them in order of contribution. This is usually indicated in the acknowledgements section of the paper or in a separate document. A list of contributors' names should be given including their full addresses if possible. If an author's address is not known then a generic address can be used instead.
It is important that each contributor receives a copy of the paper. This will include those who were not involved in its writing process but who may still have an interest in how it was developed. They may wish to cite it in future work or reference it when applying for funding.
Contributors can be from either within or outside of the team that produced the paper. For example, a contributor might be an expert in the field who helps with design ideas or reviews drafts of the paper. They would be listed as an external contributor.
The corresponding author is the point of contact for editors, readers, and outside researchers with questions concerning the paper's contents. All other authors on the paper are considered co-corresponding authors.
For research papers, the corresponding author is usually but not always the same as the senior author. For example, if there are four co-authors on a paper, then two of them can be set equal to the senior author. This would leave two junior authors who are now corresponding authors. They would be the ones to reply to inquiries from editors at journals and conferences about their part of the work.
For technical reports, the corresponding author is normally the leader of the team that produced the report. However, for some technical reports, such as those that are based on surveys or experiments conducted by others, no one person can be identified as the corresponding author. Instead, each author on the report may be given an opportunity to comment on its content before it is published.
In general, the corresponding author is the person who should be contacted if you have questions about a paper they wrote. If there is no one single corresponding author, then multiple people might be listed instead.