Hi Carlos,
For pt. 1 - I suspect you have installed LVM standard edition. System copy/refresh functionality is available with enterprise edition. You can check this by clicking on one of the links on the top right corner of the screen under LVM. If it says standard edition, you will have to install the enterprise edition first (please note: enterprise edition comes with a license fee however, you could talk to your AE and get a trial license for a PoC).
For pt. 2 - you can find all the prerequisites in the official documentation for LVM 2.0 on SAP Help Portal and please check the LVM 2.0 collective SAP note for further details.
Hope this helps and lemme know if you have further questions.
Best Regards,
Adarsh