How to setup a schedule
Backup schedules are defined separately
for each backup set. To view a backup set's schedule, double click on
the backup set, and then click
on the Schedule tab. From here you control the schedule:

The first thing you will have to do is
to click the 'Create new task' button, and name your scheduled task.
Once you have done that a scheduled task (which is an entry in the Windows
Task Scheduler that tells Windows to start different application at
certain times or specified intervals) will be created. Select the second
tab on the window that pops up:

First click the 'New' button to add a a
trigger and then use the lower part of the window to define when you
want the backup set to be launched. Press 'Ok' when you are done. The
schedule setup is now finished and the backup set will start automatically
according to your settings.
Note for Windows XP/NT users:
In order for the scheduled task to run you are required to enter your
user name and password (for your Windows login account). Go to the
Control Panel/Scheduled Tasks and double click on the task. Enter
the login information in the appropriate fields. If your Windows account
is not password protected you will have to add a password to your
account. In order to do this go to the Control Panel/Users and change
your settings.
Note on schedulers: NH Backup
does not come with a scheduler of it's own. It uses the Windows scheduler
which is a very powerful tool and ensures reliability while not adding
the drag on the system that additional schedulers do. You can add,
edit and delete scheduled jobs through NH Backup, but it is still
the Windows Scheduler that is behind it all. (Therefore you can also
use the Windows Scheduler directly to handle NH Backup schedules,
although this will not separate jobs for each backup set, the way
NH Backup does.)
Tip on tasks and triggers:
You can have many schedule jobs associated with the same backup set.
They will all be listed in the list shown above. All these jobs have
triggers that set off at preset conditions. A Job can have several
triggers, and therefore it is usually not necessary to have more than
one scheduled task per backup set: instead of adding more scheduled
tasks to a backup set, you should consider adding more triggers to
your scheduled task.