Visual Web Ripper does not really support XML. The XML parser was added to allow some very basic form of XML support. You will get no visual support and will need to enter selection XPaths manually.
Please see attached project, I've set web crawler parser = XML in project's advanced options, and setting individual web crawler parser for 'AvaliableLoads' link template, the following new page area template has configured xpath as manually.
Our premium software Content Grabber
does have full XML support if that software is an option for you.