Hi!
In order to have grouped results, you have to use an Element selector. It can be used as long as data wrapper elements are the same, otherwise your results won't satisfy you.
Please try this sitemap:
{"_id":"skuawk_people2","startUrl":["http://skuawk.com/people.html"],"selectors":[{"id":"grouped_results","type":"SelectorElement","selector":"div.item__content2","parentSelectors":["_root"],"multiple":true,"delay":0},{"id":"image_url","type":"SelectorImage","selector":"img","parentSelectors":["grouped_results"],"multiple":false,"delay":0},{"id":"Author","type":"SelectorText","selector":"li:nth-of-type(1)","parentSelectors":["grouped_results"],"multiple":false,"regex":"","delay":0},{"id":"License","type":"SelectorText","selector":"li:nth-of-type(2)","parentSelectors":["grouped_results"],"multiple":false,"regex":"","delay":0},{"id":"Download link","type":"SelectorElementAttribute","selector":"li:nth-of-type(3) a","parentSelectors":["grouped_results"],"multiple":false,"extractAttribute":"href","delay":0}]}