I agree with @Thror, the demo should have English subtitles in order to ease its understanding for non-spanish people.

Anyway, it is a wonderful plug-in for Hextlearn Community, with many outstanding functionalities. It may be very useful not only in e-learning enviroments, but in other areas where the Peer Review is a must (e.g. journal and conference editorial systems). Maybe you'd like to try to extend its functionalities to such places.

Good luck with the project!

no entiendo para que sirve este plugin

We are using this plugin and it works fine. I think is a good idea to extend the plugin to support Peer Review tasks.