gform_entry_detail_meta_boxes

add_filter( 'gform_entry_detail_meta_boxes', 'your_function_name', 10, 3 );

$meta_boxes = array(
	'submitdiv'     => array(
		'title'    => esc_html__( 'Entry', 'gravityforms' ),
		'callback' => array( 'GFEntryDetail', 'meta_box_entry_info' ),
		'context'  => 'side',
	),
	'notifications' => array(
		'title'    => esc_html__( 'Notifications', 'gravityforms' ),
		'callback' => array( 'GFEntryDetail', 'meta_box_notifications' ),
		'context'  => 'side',
	),
);

$meta_boxes['notes'] = array(
	'title'    => esc_html__( 'Notes', 'gravityforms' ),
	'callback' => array( 'GFEntryDetail', 'meta_box_notes' ),
	'context'  => 'normal',
);

$meta_boxes['payment'] = array(
	'title'         => $entry['transaction_type'] == 2 ? esc_html__( 'Subscription Details', 'gravityforms' ) : esc_html__( 'Payment Details', 'gravityforms' ),
	'callback'      => array( 'GFEntryDetail', 'meta_box_payment_details' ),
	'context'       => 'side',
	'callback_args' => array( $entry, $form ),
);

add_filter( 'gform_entry_detail_meta_boxes', 'add_payment_details_meta_box', 10, 3 );
function add_payment_details_meta_box( $meta_boxes, $entry, $form ) {
	if ( ! isset( $meta_boxes['payment'] ) ) {
		$meta_boxes['payment'] = array(
			'title'         => esc_html__( 'Payment Details', 'gravityforms' ),
			'callback'      => array( 'GFEntryDetail', 'meta_box_payment_details' ),
			'context'       => 'side',
			'callback_args' => array( $entry, $form ),
		);
	}

	return $meta_boxes;
}

/**
 * Add the meta box to the entry detail page.
 *
 * @param array $meta_boxes The properties for the meta boxes.
 * @param array $entry The entry currently being viewed/edited.
 * @param array $form The form object used to process the current entry.
 *
 * @return array
 */
function register_ur_meta_box( $meta_boxes, $entry, $form ) {
	// If the add-on is active and the form has an active feed, add the meta box.
	if ( function_exists( 'gf_user_registration' ) && gf_user_registration()->get_active_feeds( $form['id'] ) ) {
		if ( gf_pending_activations()->is_entry_pending_activation( $entry ) ) {
			return $meta_boxes;
		}

		$meta_boxes[ 'gf_user_registration' ] = array(
			'title'    => 'User Registration',
			'callback' => 'add_ur_details_meta_box',
			'context'  => 'side',
		);
	}

	return $meta_boxes;
}
add_filter( 'gform_entry_detail_meta_boxes', 'register_ur_meta_box', 10, 3 );

/**
 * The callback used to echo the content to the meta box.
 *
 * @param array $args An array containing the form and entry objects.
 */
function add_ur_details_meta_box( $args ) {

	$form  = $args['form'];
	$entry = $args['entry'];

	$html   = '';
	$action = 'gf_user_registration_process_feeds';

	// Retrieve the user from the current entry, if available.
	$user = gf_user_registration()->get_user_by_entry_id( $entry['id'] );

	if ( ! $user && rgpost( 'action' ) == $action ) {
		check_admin_referer( 'gforms_save_entry', 'gforms_save_entry' );

		// Because the entry doesn't already have a user and the 'Process Feeds' button was clicked process the feeds.
		gf_user_registration()->maybe_process_feed( $entry, $form );

		// Retrieve the user
		$user = gf_user_registration()->get_user_by_entry_id( $entry['id'] );

		$html .= 'Feeds Processed.</br></br>';
	}

	if ( ! $user ) {

		// Add the 'Process Feeds' button.
		$html .= sprintf( '<input type="submit" value="%s" class="button" onclick="jQuery(\'#action\').val(\'%s\');" />', 'Process Feeds', $action );

	} else {

		// Display some user details.
		$html .= 'Username: ' . $user->user_login . '</br></br>';
		$html .= 'User ID: ' . $user->ID;
	}

	echo $html;
}

/**
 * Add the meta box to the entry detail page and process the complete request.
 *
 * @param array $meta_boxes The properties for the meta boxes.
 * @param array $entry The entry currently being viewed/edited.
 * @param array $form The form object used to process the current entry.
 *
 * @return array
 */
function register_partial_entries_box( $meta_boxes, $entry, $form ) {
	if ( class_exists( 'GF_Partial_Entries' ) ) {
		$add_on = GF_Partial_Entries::get_instance();

		if ( ! $add_on->is_enabled( $form['id'] ) ) {
			return $meta_boxes;
		}

		$partial_entry_id = rgar( $entry, 'partial_entry_id' );
		$action           = 'gf_partial_entries_complete_entry';

		if ( $partial_entry_id && rgpost( 'action' ) == $action ) {
			check_admin_referer( 'gforms_save_entry', 'gforms_save_entry' );

			$entry_id = $entry['id'];

			gform_delete_meta( $entry_id, 'partial_entry_id' );
			gform_delete_meta( $entry_id, 'date_saved' );
			gform_delete_meta( $entry_id, 'resume_url' );
			gform_delete_meta( $entry_id, 'resume_token' );

			$entry = GFAPI::get_entry( $entry_id );
			GFEntryDetail::set_current_entry( $entry );

			return $meta_boxes;
		}

		if ( $partial_entry_id ) {
			$meta_boxes['gf_partial_entries'] = array(
				'title'    => 'Partial Entries',
				'callback' => 'add_partial_entries_meta_box',
				'context'  => 'side',
			);
		}
	}

	return $meta_boxes;
}

add_filter( 'gform_entry_detail_meta_boxes', 'register_partial_entries_box', 10, 3 );

/**
 * The callback used to echo the content to the meta box.
 *
 * @param array $args An array containing the form and entry objects.
 */
function add_partial_entries_meta_box( $args ) {
	$action = 'gf_partial_entries_complete_entry';
	$html   = sprintf( '<input type="submit" value="%s" class="button" onclick="jQuery(\'#action\').val(\'%s\');" />', 'Complete Entry', $action );

	echo $html;
}