As a portal user, you may be designated as a speaker as well as an exhibitor/sponsor for an event. Due to your many hats, there may be some tasks associated with your speaking engagement as well as tasks for your company.
To switch between the two portals to locate your tasks, you can navigate to the left-hand sign of your screen within your portal home page to locate the header 'Switch accounts'. Select the account/portal you would like to access and view tasks for.