Thanks for reaching out Valerio!
The features you are trying to implement are possible, but not “out-of-the-box” with our plugins unfortunately. So it would require custom coding to implement 🙁
We cannot help with custom coding, so to implement the features you describe, you would have to write that custom code or hire a professional developer to do it for you. We have a list of great developers here → http://m.tri.be/18k1 (and have no affiliation with any of these folks—they’re simply some well-respected names in the community that we’ve compiled to share in situations like this one).
Please let me know if there are any other issues or questions I can try to help with!
Thanks,
George