In most cases you do not have to stop individual tasks.
If you want to stop all tasks in the project, you should
switch the program to offline mode.
This is the preferred method even if you have only one task
in your project.
To stop a single task without stopping other tasks, select
the task and click on the Stop Task button on the
Task Toolbar.
A stopped task will not download queued files until you run it again.
To run a task again, select the task and click on the Run Task button.
The task will not start to download until you switch the program to
online mode. If the program is
in the online mode the task will begin to download immediately.