how to populate a listview from a json response?

HI, Im receiving a json response in a list. I mapped all my elements already. But now Im seeing that I might actually have to wait for my test response to map the elements..?? Well, im not sure (thats how it seems to be for a select menu list). Besides that, do i have to check off the array box thats next to each element?

Well, so far Im unsure about the above.... I would like to get clarity on it, and in addition to that if i could get some step by step instruction on how i complete the entire process would be great help. The is my 1st time obviously so I could use all the help i could get. Thanks
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