Taxonomy Queries

To anyone needing to query by taxonomy with this plugin, here’s what I had to do:
In your $wp_query args add the following

'tax_query' => array(
    array (
      'taxonomy' => 'portfolio_category',
      'field' => 'slug',
      'terms' => 'featured', // replace with whatever portfolio category you create
    )
),

Here’s a reference for $wp_query
https://codex.ww.wp.xz.cn/Class_Reference/WP_Query#Taxonomy_Parameters

Hope this helps.
Cheers