o365-2.0.3/modules/o365_teams/o365_teams.module

<?php

/**
 * @file
 * Hooks for the o365_teams module.
 */

/**
 * Implements hook_o365_auth_scopes().
 */
function o365_teams_o365_auth_scopes(array &$scopes) {
  $scopes[] = 'ChatMessage.Send';
  $scopes[] = 'Chat.ReadWrite';
}