I have two questions, a general question and a particular case question, regarding the authors of a manuscript.
In general, I would like to inquire about who should be added as authors to a manuscript as well as about the order of the authors.
I prepared a research paper and I was wondering whether I should add the name of this person or not. In particular, this person presented me with an access to his computer facilities (high-performance computers) and he has been supporting me with his engineering technical support. However, he is neither a researcher nor a person holding a PhD degree. In fact, he is an engineer and he is doing this for free. Can I put his name as a co-author to our manuscript?