If you're in your district email and need to submit a Help Desk ticket, you can initiate the process from there.
1. From your district email account, click the Google Apps Switcher in the upper-right corner, then scroll down to the Zendesk button towards the bottom
2. Click the Zendesk icon and the Help Desk should load automatically
Once you're at the Help Desk you're ready to submit a ticket. See the write up on that here.