Many university projects request LaTex as preferred or even demanded task submission format. Since ShareLaTeX didn't quite work out for many colleagues of mine, another more simple and user friendly option established and pushed through. That is Overleaf, online LaTeX text editor. Apart from the fact that two of those lately connected powers, the problem of sharing and working on the same document turned out not being a part of the free "trial" version. There are two options offered to share a document: link sharing and e-Mail invitation. e-Mail invitation as a naturally logical sharing option is unfortunately not working.