Adding filter to WordPress dashboard (not posts)

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I’m looking to filter a list in the dashboard of our company’s project management site. I want to filter it by users but currently it can only sort by date. The users are displayed on hover so all of the information is there in the table, I just want to add a search bar to filter names. Is this relatively easily done? I am mostly front end so my php skills are somewhat lacking. The plugin being used is Panorma projects.

Everything plugin I’ve tried so far is for filtering posts and they don’t carry over to the panorama page.

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  1. This ic the code for adding custom filters in WP custom Post types.

    Just change the code to you requirements.

    In first function in the select box get all the users or particular users by role.

    And in the second function macth the selected records with Author ID

     function wpse45436_admin_posts_filter_restrict_manage_posts(){
        $type = 'post';
        if (isset($_GET['post_type'])) {
            $type = $_GET['post_type'];
        }

        //only add filter to post type you want
        if ('POST_TYPE' == $type){
            //change this to the list of values you want to show
            //in 'label' => 'value' format
            $values = array(
                'label' => 'value', 
                'label1' => 'value1',
                'label2' => 'value2',
            );
            ?>
            <select name="ADMIN_FILTER_FIELD_VALUE">
            <option value=""><?php _e('Filter By ', 'wose45436'); ?></option>
            <?php
                $current_v = isset($_GET['ADMIN_FILTER_FIELD_VALUE'])? $_GET['ADMIN_FILTER_FIELD_VALUE']:'';
                foreach ($values as $label => $value) {
                    printf
                        (
                            '<option value="%s"%s>%s</option>',
                            $value,
                            $value == $current_v? ' selected="selected"':'',
                            $label
                        );
                    }
            ?>
            </select>
            <?php
        }
    }


    add_filter( 'parse_query', 'wpse45436_posts_filter' );
    /**
     * if submitted filter by post meta
     * 
     * make sure to change META_KEY to the actual meta key
     * and POST_TYPE to the name of your custom post type
     * @author Ohad Raz
     * @param  (wp_query object) $query
     * 
     * @return Void
     */
    function wpse45436_posts_filter( $query ){
        global $pagenow;
        $type = 'post';
        if (isset($_GET['post_type'])) {
            $type = $_GET['post_type'];
        }
        if ( 'POST_TYPE' == $type && is_admin() && $pagenow=='edit.php' && isset($_GET['ADMIN_FILTER_FIELD_VALUE']) && $_GET['ADMIN_FILTER_FIELD_VALUE'] != '') {
            $query->query_vars['author'] = ID of the user from $_GET;
        }
    }

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