Profile: hellobarrio

$parent = get_post( 12345 ); // the parent post that holds the RFG
$sezioni = toolset_get_related_posts(
  $parent,     // the parent post
  'sezioni',   // the RFG slug
  'parent',     // the post role in this relationship is 'parent'
  1000000,     // the maximum number of results
  0,           // the offset
  array(),     // additional query arguments
  'post_id',   // return format
  'child',    // role to return
);
  
// $sezioni is now an array of post IDs for each RFG
  
$sez1 = get_post( $sezioni[0] ); // example, get the first Sezioni RFG ID
  
$pulsanti = toolset_get_related_posts(
  $sez1,        // the parent RFG
  'pulsanti',  // the RFG slug
  'parent',     // the sezioni role in this relationship is 'parent'
  1000000,     // the maximum number of results
  0,           // the offset
  array(),     // additional query arguments
  'post_id',   // return format
  'child',    // role to return
);
  
// $pulsanti is now an array of post IDs for each RFG in $sez1