How can I Eliminate render-blocking JavaScript and CSS in above-the-fold content?

I am using drupal 7 and Page speed in 82 for desktop on Google Page Insights. I am having some issues regarding eliminating render blocking js and css. How can I do this for aggregated js/css ? I know we cannot enable Leverage browser caching for external js. I have used following modules: 1. Minify 2. Advanced CSS / JS Aggregation.

Please see the attached screenshot of Google Page Insights.

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