XenTorneo is a ranking system for tournaments. It lets users submit events; either through Challonge, Tio or by hand. It then takes the results, and awards points to members depending on the classification of the tournament. The ranking system is designed around the ATP Entry Ranking System in order to better evaluate tournament players.
What XenTorneo Does NOT do:
XenTorneo does not run tournaments! I feel like I can not emphasize this enough; XenTorneo is a submission system for already completed tournaments. If you are looking for a tournament system to run your events, I recommend Challonge.com.