If you want to submit a support request, you need to be listed as an Authorized Support Contact in your organization. If you are, then you just need to visit https://one.workfront.com/s/support and you'll see the form there to submit a ticket (if you're logged in to Workfront One).
If you're not yet listed as an Authorized Support Contact for your organization, you can ask those at your organization who are ASC's to have them add your or submit a support ticket on your behalf. If you don't know who those people are, feel free to call customer support 844-306-4357 and they can try to help you out over the phone!
Thank you for the prompt reply! The good news is that I am the ASC for my organization. The bad news is the message that pops up on the page: "Looks like you don’t have access to create a case. Ask your community manager for access" after I clicked the link provided. What am I missing here?