In the sent folder of your messages.
When you submit a brief, you can find it in the Sent folder of your messages tab. If your brief isn't up to scratch, your colleague(s) may send it back to you requesting a new revision of the brief, before it becomes a project.
Under the Start or Continue Brief section.
If you choose to Save a Brief for Later, you can find the draft brief by clicking the Start or Continue Brief section. Any incomplete briefs will show under a separate tab.
You can click into that tab to access your saved / incomplete brief.
Into the Documents Section of a Project.
Once a submission brief becomes a project, you can find it under the Documents section of your project. If you have created multiple revisions of that brief, they are labelled as such within your project.
Under the Approvals List.
If you submitted your brief for approval, you can find its status under theApprovals section of a project. Head to the Projects list and select your project. Under the heading for approvals, you'll see the status of your briefs or deliverables sent for approval. You can also click the blue arrow icon to view more information on all items sent for approval.