Related Items
You can use this functionality to link related items. For example, if a task was created in response to an issue then you can link the two by adding this relation. Once related, you can quickly access the issue from the task and vice-versa.
Once you add A as related to B, then B automatically becomes related to A which means you can access B from A and vice-versa.
Adding Related Items
Click on Add as shown below to add a related item. You can add up to 10 relations for an item.