[Users] RFE question

Hello, I would like to ask how to post RFE to oVirt. I know about google spreadsheet, but should I post RFE to users mailing list and after some discussion post it to bugzilla? I have 2 rfe on oVirt web interface: 1) I think that nice to have feature would be to have fourth column with disk usage in Virtual Machine tab. 2) Great improvement wold also be possibility to sort Virtual Machine tab by clicking on column name. For example: When I click on "Memory" all VMs get sorted by memory usage. If this RFE already exists, I am sorry. But I did not find it. Thank you.