When working with the Task, some unforseen circumstances may happen. For example, some actions require additional information or the Task requires interaction with the Person that is unavailable temporarily. In this case, you can postpone the Task by placing it in on hold. Once all the arrangements are set, you can take the Task off hold and continue working with it.
To use the described option, click Place On Hold / Take Off Hold on the Action Bar and provide additional information about the Task.