title: How to add a SharePoint group as Group Owner with Client Object Model?
body: <p>If you want to create a group and add group owner and default user you can use the following codes:</p>
  
  <pre><code>string siteUrl = "https://server/sites/sitename";
  ClientContext clientContext = new ClientContext(siteUrl);
  Web web = clientContext.Web;
  
  GroupCreationInformation groupCreationInfo = new GroupCreationInformation();
  groupCreationInfo.Title = "Custom Group";
  groupCreationInfo.Description = "description ...";
  
  User owner = web.EnsureUser(@"domain\username1");    
  User member = web.EnsureUser(@"domain\username2");
  
  Group group = web.SiteGroups.Add(groupCreationInfo);    
  group.Owner = owner;             
  group.Users.AddUser(member);     
  group.Update(); 
  
  clientContext.ExecuteQuery();
  </code></pre>
  
  <p>My question is: I know how to add a user as Group Owner but if I want to add a SharePoint group "Tech Support" as the group owner what the code should be?</p>