The Relay portal is split into three columns.
On the left is a list of projects and other folders. Use this to switch between different projects and to access other areas like settings.
In the middle there is a view of the current folder or project, often with a list of tasks in it. The tasks may be in bold to indicate that there is an update to read, or marked with a flag to indicate that action is required.
On the right, in what we call the "activity panel", is the thing you are working on. This might be a plan, details of a task, a form to complete, or whatever else is needed to complete the work.
There is a ⋮ menu next to the name of current folder, and against each task. Use this menu to see what actions are available.