02.11.2016 2822
Since HelpDesk 1.9 you can also forward the customer to another web project with GET instead of POST. That way you can create buttons the user can click to change the web project.
https://www.yourdomain.com/helpdesk/depdirect/1
https://www.yourdomain.com/helpdesk/index.php?p=depdirect&sp=1
On both examples the number 1 is the ID of the web project you like to redirect too.