Currently the project manager on a project in Trados Team doesn't receive any notification if a translator has accepted or rejected a task.
You have to open the project itself in Trados Team and check the status in the Stages tab.
For PMs handling multiple projects it would be helpful to have a notification by email for rejection and acceptance of tasks.
This way you can easily see your projects are on track and don't have to open each individual project.
Especially rejection notification would be helpful, as that would require an action from the PM.
Thanks,
Maya