Next and Back Button for Records in a Read-Only Grid

So I have a read-only grid displayed on a site through an interface. The summary is also displayed through an interface, and the summary of a record is pictured below.

What I want to do is add a button, going to the next or previous record so that the user doesn't have to click the home button in the top-left.

I found this thread but wasn't sure how to apply it to my situation (not completely sure how to apply a!query):

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